Kan een afbeelding zijn van hond

Dit is ons nieuw hondje Kira, een kruising van een waterhond en een Podenko. Ze is sinds 7 februari 2024 bij ons en druk bezig ons hart te veroveren. Het is een lief, aanhankelijk hondje, dat zich op een week snel aan ons heeft aangepast. Ze is heel vinnig en nieuwsgierig, een heel ander hondje dan Noleke.

This is our new dog Kira, a cross between a water dog and a Podenko. She has been with us since February 7, 2024 and is busy winning our hearts. She is a sweet, affectionate dog who quickly adapted to us within a week. She is very quick and curious, a very different dog than Noleke.

Carl Sagan Space GIF by Feliks Tomasz Konczakowski

X Files Ufo GIF by SeeRoswell.com

1990: Petit-Rechain, Belgium triangle UFO photograph - Think AboutIts

Ufo Pentagon GIF

ufo abduction GIF by Ski Mask The Slump God

Flying Sci-Fi GIF by Feliks Tomasz Konczakowski

Season 3 Ufo GIF by Paramount+

DEAR VISITOR,


MY BLOG EXISTS ALREADY 12 YEARS AND 11 MONTHS.

ON 06/05/2024 MORE THAN 1.972.210

VISITORS FROM 134 DIFFERENT NATIONS ALREADY FOUND THEIR WAY TO MY BLOG.

THAT IS AN AVERAGE OF 400 GUESTS PER DAY.

THANK YOU FOR VISITING  MY BLOG AND HOPE YOU ENJOY EACH TIME.


Goodbye
PETER2011

De bronafbeelding bekijken

De bronafbeelding bekijken

Beste bezoeker, bedankt voor uw bezoek.

Dear visitor, thank you for your visit.

Cher visiteur, je vous remercie de votre visite.

Liebe Besucher, vielen Dank für Ihren Besuch.

Estimado visitante, gracias por su visita.

Gentile visitatore, grazie per la vostra visita.

Inhoud blog
  • THIS WELL-KNOWN UFO DEBUNKER IS SKEPTICAL OF THE DOD’S RECENT INVESTIGATIONS INTO AERIAL MYSTERIES. HERE’S WHY.
  • New Study Explains Why Venus is Extremely Dry
  • New Rock Art Sites Discovered in Sudanese Eastern Desert
  • Ham, the Astrochimp Sent Into Space by NASA Before Alan Shepard and Neil Armstrong
  • UFO over Celle di Bulgheria, in Cilento, Italy May 5, 2024, UAP Sighting News.
  • UFO rising out of Seneca Lake, New York, USA water 💦 dripping off it, April 29, 2024, UAP sighting news.
  • De Marianentrog: wat weet jij over de diepste plek op aarde?
  • Government Breaks Silence: Investigating Strange Encounters with UFOs
  • Scientists discover remains of a 'buried planet' deep inside EARTH
  • EXCLUSIVEThe UFO Files: Nine never-before-seen videos of craft flying over California, Utah, Nevada and Arizona are revealed by researchers
  • Solar Max is Coming. The Sun Just Released Three X-Class Flares
  • New Evidence for Our Solar System’s Ghost: Planet Nine
  • NASA Takes Six Advanced Tech Concepts to Phase II
  • Our Alien Overlords: How Humanity Secretly Serves the Tall Whites
  • The McMinnville UFO Photos Still Mystify
  • China is Going Back to the Moon Again With Chang'e-6
  • De LaGuardia-cilinder en de gelijkenis ervan met het Cecconi-incident in 1979 boven Italië
  • Authorities Raid UFO Museum, Seize Supposed Alien Mummy’s Foot And Other Artifacts
  • Here are the 7 best places to search for life in the solar system
  • Why Venus May Be Our Best Bet For Finding Life In the Solar System
    Categorieën
  • ALIEN LIFE, UFO- CRASHES, ABDUCTIONS, MEN IN BLACK, ed ( FR. , NL; E ) (3191)
  • André's Hoekje (ENG) (743)
  • André's Snelkoppelingen (ENG) (383)
  • ARCHEOLOGIE ( E, Nl, Fr ) (1707)
  • ARTICLES of MUFON ( ENG) (434)
  • Artikels (NL.) (149)
  • ASTRONOMIE / RUIMTEVAART (11617)
  • Before it's news (ENG.) (5697)
  • Belgisch UFO-meldpunt / Frederick Delaere ( NL) (11)
  • Diversen (Eng, NL en Fr) (4142)
  • FILER FILES - overzicht met foto's met dank aan Georges Filer en WWW.nationalUFOCenter.com (ENG) (925)
  • Frederick's NEWS ITEMS (ENG en NL) (112)
  • HLN.be - Het Laatste Nieuws ( NL) (1668)
  • INGRID's WEETJES (NL) (5)
  • Kathleen Marden 's News about Abductions... ( ENG) (33)
  • LATEST ( UFO ) VIDEO NEWS ( ENG) (10151)
  • Michel GRANGER - a French researcher ( Fr) (18)
  • MYSTERIES ( Fr, Nl, E) (1947)
  • MYSTERIES , Complot Theories, ed ( EN, FR, NL ) (363)
  • Myths, legends, unknown cultures and civilizations (4)
  • National UFO Center {NUFOC} (109)
  • News from the FRIENDS of facebook ( ENG ) (6049)
  • NIEUWS VAN JAN ( NL) (42)
  • Nieuws van Paul ( NL) (17)
  • NineForNews. nl ( new ipv NIBURU.nl) (NL) (3712)
  • Oliver's WebLog ( ENG en NL) (118)
  • Paul SCHROEDER ( ENG) (98)
  • Reseau Francophone MUFON / EUROPE ( FR) (86)
  • références - MAGONIE (Fr) (486)
  • Ruins, strange artifacts on other planets, moons, ed ( Fr, EN, NL ) (562)
  • SF-snufjes }, Robotics and A.I. Artificiel Intelligence ( E, F en NL ) (692)
  • UFO DIGEST / a Weekly Newsletter - thanks that I may publish this on my blog (ENG) (125)
  • UFOs , UAPs , USOS (2972)
  • Vincent'snieuws ( ENG en NL) (5)
  • Who is Stanton FRIEDMAN - follow his news (ENG) (16)
  • WHO IS WHO? ( ENG en NL) (5)
  • Zoeken in blog

    Beoordeel dit blog
      Zeer goed
      Goed
      Voldoende
      Nog wat bijwerken
      Nog veel werk aan
     

    The purpose of  this blog is the creation of an open, international, independent and  free forum, where every UFO-researcher can publish the results of his/her research. The languagues, used for this blog, are Dutch, English and French.You can find the articles of a collegue by selecting his category.
    Each author stays resposable for the continue of his articles. As blogmaster I have the right to refuse an addition or an article, when it attacks other collegues or UFO-groupes.
     

    Archief per maand
  • 05-2024
  • 04-2024
  • 03-2024
  • 02-2024
  • 01-2024
  • 12-2023
  • 11-2023
  • 10-2023
  • 09-2023
  • 08-2023
  • 07-2023
  • 06-2023
  • 05-2023
  • 04-2023
  • 03-2023
  • 02-2023
  • 01-2023
  • 12-2022
  • 11-2022
  • 10-2022
  • 09-2022
  • 08-2022
  • 07-2022
  • 06-2022
  • 05-2022
  • 04-2022
  • 03-2022
  • 02-2022
  • 01-2022
  • 12-2021
  • 11-2021
  • 10-2021
  • 09-2021
  • 08-2021
  • 07-2021
  • 06-2021
  • 05-2021
  • 04-2021
  • 03-2021
  • 02-2021
  • 01-2021
  • 12-2020
  • 11-2020
  • 10-2020
  • 09-2020
  • 08-2020
  • 07-2020
  • 06-2020
  • 05-2020
  • 04-2020
  • 03-2020
  • 02-2020
  • 01-2020
  • 12-2019
  • 11-2019
  • 10-2019
  • 09-2019
  • 08-2019
  • 07-2019
  • 06-2019
  • 05-2019
  • 04-2019
  • 03-2019
  • 02-2019
  • 01-2019
  • 12-2018
  • 11-2018
  • 10-2018
  • 09-2018
  • 08-2018
  • 07-2018
  • 06-2018
  • 05-2018
  • 04-2018
  • 03-2018
  • 02-2018
  • 01-2018
  • 12-2017
  • 11-2017
  • 10-2017
  • 09-2017
  • 08-2017
  • 07-2017
  • 06-2017
  • 05-2017
  • 04-2017
  • 03-2017
  • 02-2017
  • 01-2017
  • 12-2016
  • 11-2016
  • 10-2016
  • 09-2016
  • 08-2016
  • 07-2016
  • 06-2016
  • 05-2016
  • 04-2016
  • 03-2016
  • 02-2016
  • 01-2016
  • 12-2015
  • 11-2015
  • 10-2015
  • 09-2015
  • 08-2015
  • 07-2015
  • 06-2015
  • 05-2015
  • 04-2015
  • 03-2015
  • 02-2015
  • 01-2015
  • 12-2014
  • 11-2014
  • 10-2014
  • 09-2014
  • 08-2014
  • 07-2014
  • 06-2014
  • 05-2014
  • 04-2014
  • 03-2014
  • 02-2014
  • 01-2014
  • 12-2013
  • 11-2013
  • 10-2013
  • 09-2013
  • 08-2013
  • 07-2013
  • 06-2013
  • 05-2013
  • 04-2013
  • 03-2013
  • 02-2013
  • 01-2013
  • 12-2012
  • 11-2012
  • 10-2012
  • 09-2012
  • 08-2012
  • 07-2012
  • 06-2012
  • 05-2012
  • 04-2012
  • 03-2012
  • 02-2012
  • 01-2012
  • 12-2011
  • 11-2011
  • 10-2011
  • 09-2011
  • 08-2011
  • 07-2011
  • 06-2011
    Rondvraag / Poll
    Bestaan UFO's echt? Are UFOs real?Les OVNIS existent-ils vraiement?
    Ja / Yes / Oui
    Nee / NO / Non
    Bekijk resultaat

    Rondvraag / Poll
    Denk Jij dat UFO's buitenaards zijn? Do You think that UFOs are extraterrestrial? Les OVNIS sont- ils ET?
    ja / Yes / Oui
    Nee / NO / NON
    Bekijk resultaat

    E-mail mij

    Druk oponderstaande knop om mij te e-mailen.

    Blog als favoriet !
    FORUM

    Druk op onderstaande knop om te reageren in mijn forum

    Zoeken in blog

    Deze blog is opgedragen aan mijn overleden echtgenote Lucienne.

    In 2012 verloor ze haar moedige strijd tegen kanker!

    In 2011 startte ik deze blog, omdat ik niet mocht stoppen met mijn UFO-onderzoek.

    BEDANKT!!!

    Een interessant adres?
    UFO'S of UAP'S, ASTRONOMIE, RUIMTEVAART, ARCHEOLOGIE, OUDHEIDKUNDE, SF-SNUFJES EN ANDERE ESOTERISCHE WETENSCHAPPEN - DE ALLERLAATSTE NIEUWTJES
    UFO's of UAP'S in België en de rest van de wereld
    In België had je vooral BUFON of het Belgisch UFO-Netwerk, dat zich met UFO's bezighoudt. BEZOEK DUS ZEKER VOOR ALLE OBJECTIEVE INFORMATIE , enkel nog beschikbaar via Facebook en deze blog. Verder heb je ook het Belgisch-Ufo-meldpunt en Caelestia, die prachtig, doch ZEER kritisch werk leveren, ja soms zelfs héél sceptisch... Voor Nederland kan je de mooie site www.ufowijzer.nl bezoeken van Paul Harmans. Een mooie site met veel informatie en artikels. MUFON of het Mutual UFO Network Inc is een Amerikaanse UFO-vereniging met afdelingen in alle USA-staten en diverse landen. MUFON's mission is the analytical and scientific investigation of the UFO- Phenomenon for the benefit of humanity... Je kan ook hun site bekijken onder www.mufon.com. Ze geven een maandelijks tijdschrift uit, namelijk The MUFON UFO-Journal. Since 02/01/2020 is Pieter ex-president (=voorzitter) of BUFON, but also ex-National Director MUFON / Flanders and the Netherlands. We work together with the French MUFON Reseau MUFON/EUROP. ER IS EEN NIEUWE GROEPERING DIE ZICH BUFON NOEMT, MAAR DIE HEBBEN NIETS MET ONZE GROEP TE MAKEN. DEZE COLLEGA'S GEBRUIKEN DE NAAM BUFON VOOR HUN SITE... Ik wens hen veel succes met de verdere uitbouw van hun groep. Zij kunnen de naam BUFON wel geregistreerd hebben, maar het rijke verleden van BUFON kunnen ze niet wegnemen...
    09-04-2022
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Mass extinction 359 million years ago may have been caused by 'one or more stars going supernova' just 65 light years from Earth

    Mass extinction 359 million years ago may have been caused by 'one or more stars going supernova' just 65 light years from Earth

    • The Late Devonian extinction killed 50 per cent off all genera of life on Earth
    • Previous studies have linked the event with climate change and volcanism
    • However, US researchers point to evidence for long-term ozone depletion
    • This, they propose, could only have been caused by one of more supernovae  

    Exploding stars — or 'supernovae' — a mere 65 light years from Earth may have triggered the devastating mass extinction event around 359 million years ago.

    The Late Devonian extinction saw vanish 50 per cent of all genera — groups of species — and 19 per cent of all families, the next largest grouping on the tree of life. 

    Among the groups to be worst impacted were the jaw-less fish, reef-building 'rugose' corals and the trilobites — iconic marine arthropods that look like woodlice.

    This episode mass dying has previously been blamed on asteroid impacts, climate change, sea level changes and large-scale volcanic activity. 

    Researchers from the US, however, examined the boundary in the rock record between the Devonian and the next period, the Carboniferous.

    Here lie hundreds of thousands of generations of plant spores that were sunburnt by ultraviolet light — suggesting a long-term weakening of the ozone layer.

    This may have been caused by the impact of one or more nearby supernovae explosions on the solar system — and would have been catastrophic for life. 

    Exploding stars ¿ or 'supernovae' ¿ a mere 65 light years from Earth may have triggered the devastating mass extinction event around 359 million years ago. Pictured, an artists impression of a local supernova as seen from Earth orbit

    Exploding stars — or 'supernovae' — a mere 65 light years from Earth may have triggered the devastating mass extinction event around 359 million years ago. Pictured, an artists impression of a local supernova as seen from Earth orbit

    'We propose that one or more supernova explosions, about 65 light-years away from Earth, could have been responsible for the protracted loss of ozone, said paper author and astronomer Brian Fields of the University of Illinois at Urbana-Champaign.

    'Earth-based catastrophes such as large-scale volcanism and global warming can destroy the ozone layer too, but evidence for those is inconclusive for the time interval in question.'

    Professor Fields and his colleagues also ruled out other space-based events that could have potentially caused ozone depletion — such as deadly gamma-ray bursts, meteorite impacts and solar eruptions.

    'These events end quickly and are unlikely to cause the long-lasting ozone depletion that happened at the end of the Devonian period, said paper author and astronomer Jesse Miller, also of the University of Illinois. 

    In contrast, the researchers explained, a supernova has the potential to have a more lasting impact — especially given how they can deliver a 'one-two punch'.

    Should a nearby star have gone nova, the Earth would shortly have been bathed in damaging ultra violet, X-ray and gamma ray radiation.

    This would have be followed up by the debris blast from the explosion slamming into the solar system and subjecting our planet to irradiation from the cosmic rays accelerated by the supernova.

    Together, the damage to the Earth's ozone layer would have likely lasted up to some 100,000 years, the researchers said.  

    Although this is not as long as the 300,000-year-spanning decline in biodiversity that led up to the end of the Devonian period, the supernova could have occurred in tandem with other catastrophes — or even multiple nova explosions. 

    'This is entirely possible. Massive stars usually occur in clusters with other massive stars, and other supernovae are likely to occur soon after the first explosion,' explained Mr Miller.

    Should a nearby star have gone nova, the Earth would shortly have been bathed in damaging ultra violet, X-ray and gamma ray radiation. This would have be followed up by the debris blast from the explosion slamming into the solar system. Pictured, a simulation of a nearby supernova explosion battering and compressing the solar wind ¿ with the Earth's orbit shown in blue and the Sun itself as the central red dot

    Should a nearby star have gone nova, the Earth would shortly have been bathed in damaging ultra violet, X-ray and gamma ray radiation. This would have be followed up by the debris blast from the explosion slamming into the solar system. Pictured, a simulation of a nearby supernova explosion battering and compressing the solar wind — with the Earth's orbit shown in blue and the Sun itself as the central red dot

    Proof for the supernovae hypothesis, however, would need to come from finding evidence of the radioactive isotopes plutonium-244 and samarium-146 within the rocks and fossils deposited during the time of the mass extinction.

    'Neither of these isotopes occurs naturally on Earth today and the only way they can get here is via cosmic explosions,' said paper author and astronomer Zhenghai Liu.

    Or, as Professor Fields explains it, they are like green bananas.

    'When you see green bananas [here] in Illinois, you know they are fresh, and you know they did not grow here.'

    'Like bananas, Pu-244 and Sm-146 decay over time. So if we find these radioisotopes on Earth today, we know they are fresh and not from here — the green bananas of the isotope world — and thus the smoking guns of a nearby supernova.'

    The search for these metaphorical bananas, however, will be a task for the future, the researchers explained.

    The Late Devonian extinction saw vanish 50 per cent of all genera ¿ groups of species ¿ and 19 per cent of all families, the next largest grouping on the tree of life. Among the groups to be worst impacted were the jaw-less fish (pictured in this artist's impression) reef-building 'rugose' corals and the trilobites ¿ iconic marine arthropods that look like woodlice
    The Late Devonian extinction saw vanish 50 per cent of all genera — groups of species — and 19 per cent of all families, the next largest grouping on the tree of life. Among the groups to be worst impacted were the jaw-less fish (pictured in this artist's impression) reef-building 'rugose' corals and the trilobites — iconic marine arthropods that look like woodlice

    'The overarching message of our study is that life on Earth does not exist in isolation,' Professor Fields concluded.

    'We are citizens of a larger cosmos, and the cosmos intervenes in our lives — often imperceptibly, but sometimes ferociously.'

    The full findings of the study were published in the journal Proceedings of the National Academy of Sciences.

    WHEN WERE EARTH'S 'BIG FIVE' EXTINCTION EVENTS?

    Traditionally, scientists have referred to the 'Big Five' mass extinctions, including perhaps the most famous mass extinction triggered by a meteorite impact that brought about the end of the dinosaurs 66 million years ago. 

    But the other major mass extinctions were caused by phenomena originating entirely on Earth, and while they are less well known, we may learn something from exploring them that could shed light on our current environmental crises.

    1. The Late Ordovician: This ancient crisis around 445m years ago saw two major waves of extinction, both caused by climate change associated with the advance and retreat of ice sheets in the southern hemisphere. This makes it the only major extinction to be linked to global cooling. 
    2. The Late Devonian: This period is now regarded as a number of 'pulses' of extinction spread over 20m years, beginning 380m years ago. This extinction has been linked to major climate change, possibly caused by an eruption of the volcanic Viluy Traps area in modern-day Siberia. A major eruption might have caused rapid fluctations in sea levels and reduced oxygen levels in the oceans.
    3. The Middle Permian:  Scientists have recently discovered another event 262m years ago that rivals the 'Big Five' in size. This event coincided with the Emeishan eruption in what's now China, and is known to have caused simultaneous extinctions in the tropics and higher latitudes.
    4. The Late Permian: The Late Permian mass extinction around 252m years ago dwarfs all the other events, with about 96% of species becoming extinct. The extinction was triggered by a vast eruption of the Siberian Traps, a gigantic and prolonged volcanic event that covered much of modern day Siberia, which led to a cascade of environmental effects.
    5. The Late Triassic: The Late Triassic event, 201m years ago, shares a number of similarities with the Late Permian event. It was caused by another large-scale eruption, this time of the Central Atlantic Magmatic Province, which heralded the splitting of the supercontinent Pangaea and the initial opening of what would later become the Atlantic Ocean.

    09-04-2022 om 23:41 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Scientists find ‘smoking gun’ proof of a recent supernova near Earth

    Scientists find ‘smoking gun’ proof of a recent supernova near Earth

    A supernova exploded near Earth about 2.5 million years ago, possibly causing an extinction event.
    Scientists find 'smoking gun' proof of a recent supernova near Earth
    An artist's impression of a supernova.
    KEY TAKEAWAYS
    • Researchers from the University of Munich find evidence of a supernova near Earth. 
    • A star exploded close to our planet about 2.5 million years ago.
    • The scientists deduced this by finding unusual concentrations of isotopes, created by a supernova.

    If you wanted some more shattering news, we now know that a supernova exploded very close to Earth about 2.5 million years ago. That might sound like a long time ago, but in the life of our 4.5 billion-year-old planet, that’s just yesterday.

    Supernovas are amazingly bright explosions of stars at the end of their lives. A recent study found a blast 4.5 million light-years away could release as much as 10 times the amount of energy that a sun can emit in its lifetime. It also spreads a tremendous amount of chemicals all throughout the cosmos. Just-released research looked at such a spread and found that concentrations of particular elements point to a supernova near Earth just 2.5 million years ago.

    The scientists found an unusual amount of 53Mna radioisotope made by supernovas. Previous studies looked for such traces in concentrations of 60Fe, an isotope of iron.

    The scientists, led by Dr. Gunther Korschinek from the Technical University of Munich, focused their study on ferromanganese crusts. These marine sediments, composed mainly of iron and manganese oxides, grow in time and jut out from the water. This makes them great record-keepers of chemicals in the water around them. While examining these ferromanganese crusts from locations in the Pacific Ocean, the team found not only the isotope 60Fe, but also 53Mn. The samples came from 1,589 meters (5,213 feet) down to 5,120 meters (3.18 miles) down.

    What does the presence of 60Fe tell the researchers? It’s half-life of 2.6 million years indicates that it was created in a nearby supernova explosion in relatively recently times. Otherwise, 60Fe would have decayed into nickel.

    One other explanation for the presence of the isotope is its possible creation in the death throes of asymptotic giant branch (AGB) stars. But the presence of 53Mn, which cannot be produced by such stars, clearly points to supernovae as the origin, think the scientists.

    This Manganese crust started to form about 20 million years ago. Growing layer by layer, it resulted in minerals precipitated out of seawater.Elevated concentrations of 60 Fe and 56 Mn in layers from 2.5 million years ago hints at a nearby supernova explosion around that time.

    Credit: Dominik Koll/ TUM

    “The increased concentrations of manganese-53 can be taken as the ‘smoking gun’ – the ultimate proof that this supernova really did take place,” shared Dr. Korschinek in a press release.

    The researchers used accelerator mass spectrometry to locate the 53Mn atoms in the crust that looks like hardened chocolate cake.

    “This is investigative ultra-trace analysis,” said Korschinek. “We are talking about merely a few atoms here.” He explained further that the technique is also very useful in figuring out the sizes of the original stars, adding “accelerator mass spectrometry is so sensitive that it even allows us to calculate from our measurements that the star that exploded must have had around 11 to 25 times the size of the sun.”

    If there was a supernova in Earth’s relatively recent history, what effect did it have on the planet? The scientists think it likely caused cosmic ray showers and affected the climate. It might have also caused a partial extinction event – the Pliocene marine megafauna extinction

    RELATED VIDEOS, selected and posted by peter2011

    09-04-2022 om 23:22 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Dying Star Puffs out six Smoke Rings

    Dying Star Puffs out six Smoke Rings

    Our Sun’s days are numbered. In about 5 billion years the Sun will expand into a red giant, casting off its outer layers before settling down to become a white dwarf. It’s the inevitable fate of most sunlike stars, and the process is well understood. But as a recent study shows, there are still a few things we have to learn about dying Suns.

    This recent study looks at a star known as V Hydrae or V Hya for short. It’s a red giant star about 1,300 light-years away with a mass roughly the same as the Sun. It’s what the Sun might look like in a few billion years. There are, however, a couple of things that make it different from our home star.

    For one, it has a companion star. The companion is too faint for us to see, but based on the motion of V Hya, we know it is likely a red dwarf star that orbits V Hya once every 8.5 years. For another, V Hya seems to be dying in an unusual way.

    In its current state, V Hya is categorized as a Mira variable star. It varies in brightness by about 1 – 2 magnitudes every 530 days, give or take. This is typical for dying red giant stars. As they fuse heavier elements in their core trying to survive, red giants often enter a period of oscillation, driven by the heating and cooling of the core. What’s more unusual is the fact that it is also a carbon star. This means that carbon fused in its core has been dredged up to the atmosphere of the star. So when astronomers look at V Hya’s spectrum, they see a strong presence of carbon. Basically, the star’s atmosphere is very “sooty.”

    These two characteristics combined make V Hya an Asymptomatic Giant Branch star or AGB. About 90% of sunlike stars will enter an AGB period toward the end of their life. Astronomers have generally thought that the AGB epoch is a gradual process of stellar death, where the outer layers of the star are cast off over a period of about 100,000 years. After which, the remaining core collapses into a white dwarf. But V Hya shows this is either partly or sometimes incorrect.

    ALMA image of V Hydrae and its smoke rings.
    Credit: ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO/AUI/NSF)

    If an AGB gradually cast off its outer layers, then we would expect to see an ever-expanding nebula known as a [planetary nebula](/post/cold-embers/) surrounding most white dwarfs. And we do see many planetary nebulae as the remnants of sunlike stars. But observations by the Atacama Large Millimeter/submillimeter Array (ALMA) show that V Hydrae isn’t creating such a nebula. Instead, it has been casting off thick rings rich in carbon. The star has ejected six rings over the course of about 2,100 years. The team also observed jets of gas ejected from the star perpendicular to the rings. This suggests that V Hya undergoes an unusually active period every few hundred years, which is very different from the common AGB model.

    This period of active bursts is likely short lived compared to the full AGB epoch, so astronomers are fortunate to capture a dying star in this stage. It isn’t known whether most AGB stars experience such active periods, or whether V Hya is particularly unusual. To solve that mystery, it will take more observations of other dying red giant stars.

    Reference: 

    The post Dying Star Puffs out six Smoke Rings appeared first on Universe Today.

    Artist's impression of a carbon-rich asymptotic branch star called V. Hydrae.
    Artist's impression of a carbon-rich asymptotic branch star called V. Hydrae. 
    (Image credit: ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO/AUI/NSF))
     
    Source:

    09-04-2022 om 21:55 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen. LATEST UFO SIGHTINGS AND VIDEOS - 09-04-22 BIS

    LATEST UFO SIGHTINGS AND VIDEOS - 09-04-22 - BIS

    UFO sighting Phoenix Arizona April 2022

    UFO sighting from airplane April 2022

    UFO Sighting Moscow Russia April 2022

    UFO Sighting April 7, 2022

    Amazing UFO Sighting 9th April 2022

    UFO sighting Reno Nevada April 2022

    UFO Sighting April 2, 2022

    https://www.youtube.com/ }

    09-04-2022 om 21:23 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:LATEST ( UFO ) VIDEO NEWS ( ENG)
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.LATEST UFO SIGHTINGS AND VIDEOS - 09-04-22

    LATEST UFO SIGHTINGS AND VIDEOS - 09-04-22

    What’s That…..? 😱😱😱 Over Ukraine, March 07, 2022, UAP/UFO News | @UFOTV -VIRAL  

    AMAZING UFO FLOTILLA IN THE ITALIAN SKY AND FLORIDA.

    DEAD ALIENS (ET’S) FOUND AT UFO CRASH SITE IN THE UKRAINE – PREMIERED TODAY - 

      

    XANDREWX

    video image

    MIND BLOWING UFO VIDEOS THAT CAN’T BE EXPLAINED! (PREMIERED TODAY) -   XANDREWX

    UNBELIEVABLE – 3 UFOS FLYING OVER MELBOURNE AUSTRALIA – 6TH APRIL 2022XANDREWX 

    Top 5 UFO Sightings You Might Want To See This

    UFO SIGHTING Over The Isle Of Wight ? (April 1st 2022).

    Another great UFO Sighting !

    Isle of Wight. UK. April 1st 2022.

    Credits: Kerry.

    MAJOR NEWS!! NAVY PILOTS Come Forward With New UFO Military Footage! 2022

    NAVY PILOTS Come Forward With New UFO Military Footage! 2022

    UFO sighting Denver Colorado April 2022

    UFO sighting Denver Colorado April 2022

    https://beforeitsnews.com/ }

    09-04-2022 om 21:01 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:LATEST ( UFO ) VIDEO NEWS ( ENG)
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.It’s Been Three Months in Deep Space, and Webb’s Mid-Infrared Instrument is Still Cooling Down

    It’s Been Three Months in Deep Space, and Webb’s Mid-Infrared Instrument is Still Cooling Down

    The James Webb Space Telescope continues to cool down out at its location at Lagrange Point 2, about 1.5 million kilometers from Earth. Since JWST is an infrared telescope, it needs to operate at extremely low temperatures, about 40 k (-223 degrees Celsius, -369.4 degrees Fahrenheit). But one instrument needs to be even colder.  

    To operate at peak efficiency, Webb’s Mid-Infrared Instrument (MIRI) must be cooled to a chilly 7 K (-266 C).  And it will need a little help to reach those frigid temps.

    Most of the telescope and its instruments rely on JWST’s massive sunshield as well as passive cooling, taking advantage of the frigid temperatures in deep space. The near-infrared instruments (NIRCam, NIRSpec, FGS-NIRISS) have now reached their target range from 34 to 39 K by cooling passively.

    MIRI carries detectors that need to be at less than 7 kelvins to be able to detect longer wavelength photons of infrared light. This temperature is not possible on Webb by passive means alone, so Webb carries an innovative cryocooler, dedicated to the task of cooling MIRI’s detectors so that it can see farther into the infrared than the other instruments.

    Previous infrared missions, such as the Spitzer Space Telescope, used a tank of cryogenic liquid helium that acted as a coolant by producing a freezing vapor that cooled the entire telescope assembly. But the vapor was vented to space, and once the supply helium was gone, the ability to cool the telescope was over. Spitzer launched in 2003 and the mission ended in 2020.

    But MIRI’s cooler reuses its helium, just like the refrigerator in your kitchen continuously recycles its own coolant.

    “Over the last couple weeks, the cryocooler has been circulating cold helium gas past the MIRI optical bench, which will help cool it to about 15 kelvins,” explained Konstantin Penanen and Bret Naylor, cryocooler specialists, NASA JPL, in a JWST blog post. “Soon, the cryocooler is about to experience the most challenging days of its mission. By operating cryogenic valves, the cryocooler will redirect the circulating helium gas and force it through a flow restriction. As the gas expands when exiting the restriction, it becomes colder, and can then bring the MIRI detectors to their cool operating temperature of below 7 kelvins.”

    MIRI is inspected in the giant clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, in 2012.
    Credit: NASA/Chris Gunn.

    This type of recycling cooler also means the lifetime of MIRI instrument, as well as the entire JWST could be even longer than Spitzer’s 16 years. Webb engineers have mentioned a possible 20-year lifetime, or even longer.

    Once MIRI reaches the final temperatures, engineers can begin the final phase of commissioning the telescope.

    “Getting this instrument cold is one of the last major challenges faced by Webb before the MIRI team can truly relax,” wrote Alistair Glasse, Webb-MIRI Instrument Scientist, UK Astronomy Technology Centre and and Macarena Garcia Marin, MIRI Instrument and Calibration Scientist, ESA. They said the cryogenic cooler will “pull out almost all of the heat left in MIRI’s 100 kilograms (220 pounds) of metal and glass from that tropical launch day morning, three months ago. MIRI will be the last of Webb’s four instruments to open its eyes on the universe.”

    You can read more details about how the cryogenic cooler works here. More information about MIRI is available at this NASA website. You can see the temperatures of all the instruments and progress on Webb’s commissioning at the Where’s Webb site.

    The post It’s Been Three Months in Deep Space, and Webb’s Mid-Infrared Instrument is Still Cooling Down appeared first on Universe Today.


    Source: 

    09-04-2022 om 18:49 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Astronauts are Practicing Landing at the Moon's South Pole

    Astronauts are Practicing Landing at the Moon's South Pole

    The European Space Agency (ESA) is learning how to touch down safely at the South Pole of the Moon, without ever leaving Earth. Actual Moon landings seem to be on the horizon in the next decade via the Artemis program, and astronauts are going to have to learn to handle the unique challenges of landing in the Moon’s polar environment. With low angle sunlight and deep, permanently shadowed craters, the Moon’s South Pole poses difficulties no Apollo mission ever faced. To get hands-on experience with this environment without risking human life, ESA is putting astronauts through their paces on high-tech simulators.

    Simulators have long been a part of space exploration. Movie fans probably remember Gary Sinise – playing astronaut Ken Mattingly in the classic 1995 film Apollo 13 – denying himself sleep and rest to run test after test in the simulator, searching for a way to bring the mission’s endangered crew home safe. In real life, NASA used a variety of simulators during the Apollo era to test different aspects of the program.

    The most visceral Apollo testbed was the rocket-powered Lunar Lander Research Vehicle (LLRV), designed to simulate landing in a low-gravity environment. The LLRV gave Neil Armstrong and his colleagues valuable practice on Earth before testing the real thing on the Moon. but the LLRV came with its own risks. It crashed several times, forcing Armstrong and other pilots to make use of the built-in ejection seat and parachute to safety. Still, it was better to crash on Earth than on the Moon!

    A Lunar Landing Research Vehicle (LLRV) being tested in 1964. This simulator recreated the low gravity conditions of landing on the Moon, and was used to train Apollo astronauts.

    ESA’s new simulator, part of the ‘Human-In-the-Loop’ flight vehicle Engineering study, doesn’t leave the ground or rely on rockets – it’s built onto a large-scale robotic arm, which is able to move and shift at extreme angles to simulate the effects of the commands the astronaut gives the computer. Based at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR), the Robotic Motion Simulator is a feat of engineering in its own right.

    ESA astronaut Robert Vittori, who has been to space three times before, put the simulator through its paces. “The simulator is an incredible machine, probably one of the best I have experienced,” he said. “This experiment today is for me showing that Europe can play a key role in the future of exploration.”

    ESA astronaut Robert Vittori stands in from of the DLR Robotic Motion Simulator.

    Vittori tested various scenarios, including overriding the autopilot that was set to land in a field of boulders, and switching to manual control when the computer developed a fault.

    The philosophy of ESA’s Human-In-the-Loop program is that hardware engineering and software design choices for spacecraft ought to be made in cooperation with the humans who will be flying the machines. The human-machine interfaces need to be user-friendly and intuitive, so that at critical moments, like landing on the Moon, there are no surprise design flaws or pilot confusion over the controls.

    A similar philosophy enabled the success of the early days of spaceflight, when the Mercury astronauts worked closely with the engineering teams building the capsules and systems. Astronaut Wally Schirra, for example, specialized in life support systems and space suit development, while his colleague Scott Carpenter worked with the team building navigational equipment. In the present day, ESA is taking this philosophy to the next level. “We’re establishing a preliminary design and the preliminary requirements for human lunar landing, with astronauts in the loop to improve robustness and reliability of the flight system,” says project manager Luca Ferracina.

    ESA has been heavily involved in the Artemis program since the beginning. It designed and built the service module of the Orion capsule, which will take astronauts to lunar orbit, working closely with NASA and other international partners. ESA astronauts will be on board at least three of the Artemis missions to the planned Lunar Gateway space station in the coming decade.

    Learn more:

    Featured image: the DLR Robotic Motion Simulator. ESA.

    The post Astronauts are Practicing Landing at the Moon’s South Pole appeared first on Universe Today.

    Source: 

    https://beforeitsnews.com/ }

    09-04-2022 om 18:40 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.UFO Crashes On Alaska’s Lazy Mountain, April 7, 2022, Video, UFO Sighting News.

    UFO Crashes On Alaska’s Lazy Mountain, April 7, 2022, Video, UFO Sighting News.

    Date of sighting: April 7, 2022
    Location of sighting: Lazy Mountain, Alaska, USA
    News source: 
    Guys, you gota check out the video I made below, I explain everything. A UFO was seen burning and falling slowly over Alaska at the Lazy mountain area. The object was depending slowly because one eyewitness said the photos were taken 45 seconds apart! Thats slow! Way too slow to be a meteor. If it was space junk, NASA would have alerted the public. Had it been a US hypersonic missile test, the US gov would admit to it, because they want to get in the news and frighten China and Russia with new weapons. However, this is a UFO and I reveal it to you in the video below. The UFO was caught in some of the photos, so...let me show you a close up of it to prove that it was a damaged UFO depending into an entrance on the mountain to enter an underground alien base.  
    Scott C. Waring 
     
    News states: 
    When Mattias Ahlvin walked out of his house in Palmer to start his car Thursday morning, he saw something unusual in the sky. “I looked up and I saw this strange — I mean, I would just call it a smoke column. It was a dark, gray streak across the sky that was going straight vertical,” he said. Ahlvin pulled out his phone, zoomed in, and snapped a few photos of what he saw. His first thought was that it was a plane, but what surprised him was the direction the streak or plane seemed to be headed. “It looked like it was going straight down,” he said. Law enforcement and a meteorologist with the National Weather Service say that what Ahlvin saw was likely a condensation trail from an airplane that was illuminated by the rising sun. Ahlvin reached out to Alaska State Troopers to share the images of what he saw just in case it was an aircraft in distress, and his wife, Elisabeth, posted the photos to a local Facebook page asking if anyone knew what it was. Others posted similar photos and speculated whether they were looking at a rocket launch, a meteor, a plane crash, a volcano or perhaps a military operation.
     
     
     









    https://www.ufosightingsdaily.com/  }

    09-04-2022 om 17:32 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:LATEST ( UFO ) VIDEO NEWS ( ENG)
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Ancient Alien Face Found In Mars Crater, Google Map, UFO Sighting News

    Ancient Alien Face Found In Mars Crater, Google Map, UFO Sighting News

    Location of discovery: Mars 

    Coordinates: 44°22'16.95"S 100° 3'31.39"W 
     
    I was checking out Google Mars...a free program to download and use, when I found this face. I have never reported on it before and it looks really big. Its hidden inside a crater and has a lot of similarities to the ancient China statues from thousands of years ago. If you know the name of the crater this is in, please tell us in comments. Google Mars ruler which is not extremely reliable, says that the diameter of the crater is 18.9km or 11.7 miles. The face itself is 8.9 miles (13km) by 5.9 miles (9.5 miles). That is one monumental undertaking to make, even making Mount Rushmore look like child's play. This face is highly detailed. No doubt is the face of a very notable historical figure in this species culture.
    Scott C. Waring 
     
     

    https://www.ufosightingsdaily.com/  }

    09-04-2022 om 17:20 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:Ruins, strange artifacts on other planets, moons, ed ( Fr, EN, NL )
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Alien Craft Seen Entering Side Vent Of Volcano In Mexico, April 2020, Video, UFO Sighting News.

    Alien Craft Seen Entering Side Vent Of Volcano In Mexico, April 2020, Video, UFO Sighting News.


    Date of sighting: April 1, 2022

    Location of sighting: Volcano Popocateptl, Mexico
     
    Omg! This UFO is trying to disguise itself as a meteor as it enters the side vent of the volcano. Yes, there is a well known side vent in the location that it hit. This UFO really lights up as it enters the side vent, making it appear as if it exploded, but it's actually traveling down the side vent into the underground alien base 6km below the base of the volcano. Look at the incredible speed it has as it enters the volcano. It's just extraordinary that it could move so fast in such a close proximity to hitting the tunnel walls it was traveling through. Only alien technology could make a craft travel so fast, so accurately and with such precision. 
    Scott C. Waring 
     

    https://www.ufosightingsdaily.com/  }

    09-04-2022 om 17:15 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:LATEST ( UFO ) VIDEO NEWS ( ENG)
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Dark Disk Over Tokyo, Japan, Creates Ring Of Light, Video, UFO Sighting News.

    Dark Disk Over Tokyo, Japan, Creates Ring Of Light, Video, UFO Sighting News.


    Date of sighting: April 1, 2022
    Location of sighting: Tokyo, Japan
     
    A UFO video emerged this week of an unknown object over Tokyo, Japan. The object pulses creating a ring of light around it, almost like lighting and then the UFO disappears. 
     
    Such UFOs have been frequently seen around Japan, but most often near Mt Fuji and near the Fukushima nuclear reactor. So aliens do have an extreme interest in Japan. 
    Scott C. Waring

    https://www.ufosightingsdaily.com/  }

    09-04-2022 om 17:01 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:LATEST ( UFO ) VIDEO NEWS ( ENG)
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Awesome Structures Discovered Near Our SUN! April 2022, Video, UFO Sighting News.

    Awesome Structures Discovered Near Our SUN! April 2022, Video, UFO Sighting News.



    Date of sighting: April 8, 2022 12:48:41Location of sighting: Earths Sun
    Source: Helioviewer.org
     
    This is a great find by Youtuber In2ThinAir. He used NASA/SOHO sun viewer to find some strange anomalies that do have many similarities to what we believe alien ships would look like. One is a spiral-like space station, the other a giant cube. Both of them have high quality detail and have had only light added to make them more visible. 
     
    I first started to search for UFOs near the sun about 17 years ago, when I first read about two Russian researchers who stated in a news article that they found many moon size UFOs shooting around our sun at the speed of light, changing directions suddenly, making hard right turns that should be impossible for any natural object in space. The article soon disappeared a few weeks after it was published and as did the two scientists, but...I have been keeping a close eye on objects near our sun. Helioviewer.org it one of the best tools to do so. This is 100% proof that those Russian scientists were right, that moon size UFOs do exist around our sun.
    Scott C. Waring 
     
     

    https://www.ufosightingsdaily.com/  }

    09-04-2022 om 16:56 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:MYSTERIES ( Fr, Nl, E)
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Shocking UFO Sighting Defies Logic

    Shocking UFO Sighting Defies Logic

    While in restricted airspace, pilots spot an unidentified object performing unusual maneuvers unlike any other military aircraft, in this clip from Season 18, “Alien Air Force.”

    RELATED VIDEOS, selectd and posted by peter2011

    https://www.latest-ufo-sightings.net/ }

    09-04-2022 om 15:29 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:LATEST ( UFO ) VIDEO NEWS ( ENG)
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Rare 'black widow' star system could help unlock the secrets of space-time

    Rare 'black widow' star system could help unlock the secrets of space-time

    09-04-2022 om 01:02 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Scientists Just Found a ‘Significant’ Volume of Water Inside Mars’ Grand Canyon

    Scientists Just Found a ‘Significant’ Volume of Water Inside Mars’ Grand Canyon

    Scientists Just Found a Significant Volume of Water Inside Mars Grand Canyon

    A depiction of canyons (left), and Mars itself (right).

    On December 15, 2021 ESA-Roscosmos ExoMars Trace Gas Orbiter (ESA) published scientific material to declare detection of significant amounts of water at the heart of Mars’ dramatic canyon system, Valles Marineris (Grand Canyon). The newly discovered volume of water is hiding under the surface of Mars, and was detected by the Trace Gas Orbiter, a mission in its first stage under the guidance of the ESA-Roscosmos project dubbed ExoMars. Gas Orbiter revealed an area with an unusually large amount of hydrogen in the colossal Valles Marineris canyon system: assuming the hydrogen we see is bound into water molecules, as much as 40% of the near-surface material in this region appears to be water. Igor Mitrofanov, the Russian Academy of Science’s lead investigator of the Space Research Institute, presented this discovery in the ESA press release.

    Mars’ canyon water could be liquid, ice, or a messy mix

    “The reservoir is large, not too deep below ground, & could be easily exploitable for future explorers,” read a tweet on the announcement from ExoMars. That sounds basically great! But it’s too soon for Musk to pack up his bags and fly to the site, since much work is left to be done.

    A study accompanying the announcement, published in the journal Icarus, shows that neutron detection doesn’t distinguish between ice and water molecules. This means geochemists need to enter the scientific fray to reveal more details. But several features of the canyon, including its topology, have led the researchers to speculate that the water is probably in solid form (ice). But it could also be a mixture of solid and liquid.

    ( Source : https://interestingengineering.com/ )

     

    Hidden Water in Mars’ Grand Canyon discovered by ExoMars Gas Orbiter
    RELATED VIDEOS, selected and posted by peter2011

    https://webéducation.com/ }

    09-04-2022 om 00:22 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Scientists see ‘rarest event ever recorded’ in search for dark matter

    Scientists see ‘rarest event ever recorded’ in search for dark matter

    The team caught a glimpse of a process that takes 18,000,000,000,000,000,000,000 years.
    Scientists see 'rarest event ever recorded' in search for dark matter
    Image source: Pixaba
    KEY TAKEAWAYS
    • In Italy, a team of scientists is using a highly sophisticated detector to hunt for dark matter. 
    • The team observed an ultra-rare particle interaction that reveals the half-life of a xenon-124 atom to be 18 sextillion years. 
    • The half-life of a process is how long it takes for half of the radioactive nuclei present in a sample to decay.

    Scientists have observed an extremely rare particle physics event using a detector that’s hunting for dark matter, the mysterious material that physicists have yet to observe.

    In a paper published in the journal Nature, researchers with the XENON Collaboration said they’d observed the radioactive decay of a substance called xenon-124, an isotope of the element xenon — a colorless and odorless noble gas found in tiny amounts in the atmosphere. The event — a “two-neutrino double electron capture” — has eluded scientists for decades.

    It happens when “two protons in a nucleus are simultaneously converted into neutrons by the absorption of two electrons from one of the atomic shells and the emission of two electron neutrinos.” After this occurs, the event shoots out a predictable cascade of X-rays and Auger electrons that scientists look for using an ultra-sensitive detector, buried about 5,000 feet beneath Italy’s Gran Sasso mountain where it’s shielded from cosmic rays.

    “We have shown that we can observe the rarest events ever recorded,” Ethan Brown, a professor of physics at Rensselaer Polytechnic Institute and co-author of the study, told Newsweek. “The key finding is that an isotope formerly thought to be completely stable has now been shown to decay on an unimaginably long timescale.”

    How long is that timescale? The team estimated that xenon-124’s half-life is about 18 sextillion years — or 18,000,000,000,000,000,000,000 years — which is than one trillion times the age of our universe, according to the team. It’s the slowest process ever measured directly, the team wrote in a statement.

    “It’s an amazing to have witnessed this process, and it says that our detector can measure the rarest thing ever recorded,” Brown told The Independent.

    We are extremely excited to share with you that we have observed the rarest decay process ever measured! It is the two neutrino double electron capture in Xe-124. The results have been published in @nature: https://www.nature.com/articles/s41586-019-1124-4 … #NotOnlyDM #TenTrillionBillionYears #XENON

    “We designed the XENON1T experiment to look for dark matter, a new kind of matter that makes up 85 percent of the mass of the universe, but interacts so rarely that it’s never been observed,” Brown said. “This experiment is so sensitive to very rare events that we can make all kinds of other rare physics measurements. One of those is this decay of xenon-124. Although our primary goal was always the discovery of dark matter, we knew there was a good chance we could see this rare decay, so we set out to do so.”

    To get that good chance, the team had to expose their detector to a huge amount of xenon atoms by stocking it with 3.2 tons worth of liquid xenon.

    “XENON1T is a giant vat of liquid xenon surrounded by light sensors,” Brown said. “When dark matter collides in the xenon, or when a radioactive decay occurs inside, we get a tiny flash of light and a little bunch of charge out of the xenon. We measure these with the light sensors and reconstruct everything we can about the original event that caused the light and charge.”

    Although the team didn’t observe dark matter — which is the primary purpose of the detector — the recent observations could help scientists learn more about neutrinos, one of the least understood fundamental particles in the universe.

    “It proves that this XENON detector technology we use for dark matter is much more versatile,” graduate student Christian Wittweg, Ph.D student at the University of Münster in Germany, told Gizmodo. “We get all these cool analyses… for free after having built an experiment sensitive enough to hunt for dark matter.”

    The team plans to use its newer XENONnT detector to continue hunting for dark matter, the elusive material that’s estimated to comprise about 26.8 percent of all the content in the universe.

    09-04-2022 om 00:00 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    08-04-2022
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Jupiter’s Origin Story: Intriguing New Details on the Gas Giant’s Formation Journey

    Jupiter’s Origin Story: Intriguing New Details on the Gas Giant’s Formation Journey

    JunoCam Jupiter Artist Impression

    Artist impression based on JunoCam image of Jupiter acquired on July 21, 2021. Enhanced to highlight features, clouds, colors, and the beauty of Jupiter. Credit: NASA/SwRI/MSSS/TanyaOleksuik

    © CC NC SA

    Researchers of the University of Zurich (UZH) and the National Centre of Competence in Research (NCCR) PlanetS have investigated Jupiter’s formation history in great detail. Their results suggest that the giant planet migrated far from its origin and collected large amounts of material on its journey.

    One of the most important open questions in planetary formation theory is the story of Jupiter’s origin. Using sophisticated computer modeling, researchers of the University of Zurich (UZH) and the National Centre of Competence in Research (NCCR) PlanetS now shed new light on Jupiter’s formation history. Their results were published in journal The Astrophysical Journal Letters.

    Ravit Helled

    Professor of Theoretical Astrophysics at the University of Zurich and member of the NCCR PlanetS, Ravit Helled.

    Credit: Jos Schmid

    A curious enrichment of heavy elements

    When the Galileo spacecraft released a probe that parachuted into Jupiter’s atmosphere in 1995, it showed among other things that heavy elements (elements heavier than helium) are enriched there. At the same time, recent structure models of Jupiter that are based on gravity field measurements by the Juno spacecraft suggest that Jupiter’s interior is not uniform but has a complex structure.

    Since we now know that the interior of Jupiter is not fully mixed, we would expect heavy elements to be in a giant gas planet’s deep interior as heavy elements are mostly accreted during the early stages of the planetary formation,” study co-author, Professor at the University of Zurich and member of the NCCR PlanetS, Ravit Helled begins to explain. “Only in later stages, when the growing planet is sufficiently massive, can it effectively attract large amounts of light element gases like hydrogen and helium. Finding a formation scenario of Jupiter which is consistent with the predicted interior structure as well as with the measured atmospheric enrichment is therefore challenging yet critical for our understanding of giant planets,” Helled says. Of the many theories that have so far been proposed, none could provide a satisfying answer.

    Sho Shibata

    Sho Shibata is a postdoctoral researcher at the University of Zurich and a member of the NCCR PlanetS.

    Credit: Nana Shibata

    A long migration

    “Our idea was that Jupiter had collected these heavy elements in the late stages of its formation by migrating. In doing so, it would have moved through regions filled with so-called planetesimals – small planetary building blocks that are composed of heavy element materials – and accumulated them in its atmosphere,” study lead-author Sho Shibata, who is a postdoctoral researcher at the University of Zurich and a member of the NCCR PlanetS, explains.

    Yet, migration by itself is no guarantee for accreting the necessary material. “Because of complex dynamical interactions, the migrating planet does not necessarily accrete the planetesimals in its path. In many cases, the planet actually scatters them instead – not unlike a shepherding dog scattering sheep,” Shibata points out. The team therefore had to run countless simulations to determine if any migration pathways resulted in sufficient material accretion.

    “What we found was that a sufficient number of planetesimals could be captured if Jupiter formed in the outer regions of the solar system – about four times further away from the Sun than where it is located now – and then migrated to its current position. In this scenario, it moved through a region where the conditions favored material accretion – an accretion sweet spot, as we call it,” Sho reports.

    A new era in planetary science

    Combining the constraints introduced by the Galileo probe and Juno data, the researchers have finally come up with a satisfying explanation. “This shows how complex giant gas planets are and how difficult it is to realistically reproduce their characteristics,” Ravit Helled points out.

    “It took us a long time in planetary science to get to a stage where we can finally explore these details with updated theoretical models and numerical simulations. This helps us close gaps in our understanding not only of Jupiter and our solar system, but also of the many observed giant planets orbiting far away stars,” Helled concludes.

    Reference: “Enrichment of Jupiter’s Atmosphere by Late Planetesimal Bombardment” by Sho Shibata and Ravit Helled, 24 February 2022, The Astrophysical Journal Letters.
    DOI: 10.3847/2041-8213/ac54b1

    https://scitechdaily.com/ }

    08-04-2022 om 23:43 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Pew, pew! Astronomers detect a 'galactic space laser' shooting light beams at Earth from 5 BILLION light years away

    Pew, pew! Astronomers detect a 'galactic space laser' shooting light beams at Earth from 5 BILLION light years away

    • The powerful megamaser was detected by MeerKAT telescope in South Africa 
    • A megamaser acts as an astronomical laser that beams out microwave emission 
    • Light from the megamaser has travelled 58 thousand billion billion km to Earth

    Astronomers have detected a 'galactic space laser' shooting light beams at Earth from 5 billion light years away. 

    The powerful radio-wave 'laser', called a 'megamaser', was detected by the MeerKAT telescope in the Northern Cape of South Africa. 

    According to the astronomers, the record-breaking find is the most distant megamaser of its kind ever detected, at about five billion light years from Earth. 

    Light from the megamaser has therefore travelled 58 thousand billion billion (58 followed by 21 zeros) kilometres to Earth. 

    A megamaser is a extremely luminous 'maser', which is actually technically quite different from a laser. 

    A photon from a laser comes in the form of visible light, while a photon from a maser comes in the form of a microwave (hence the 'M' instead of an 'L'). 

    A three-colour optical image of the host galaxy of the hydroxyl megamaser, taken from the Hyper Suprime-Cam (HSC) on the Subaru Telescope located at the Mauna Kea Observatory on Hawaii

    A three-colour optical image of the host galaxy of the hydroxyl megamaser, taken from the Hyper Suprime-Cam (HSC) on the Subaru Telescope located at the Mauna Kea Observatory on Hawaii

    The powerful radio-wave laser, called a 'megamaser', was detected by the MeerKAT telescope in South Africa (pictured)

    The powerful radio-wave laser, called a 'megamaser', was detected by the MeerKAT telescope in South Africa (pictured)

    WHAT IS A MEGAMASER? 

    A megamaser is a type of astrophysical maser. A maser is like a laser, except that the photon from a laser comes in the form of visible light, while a photon from a maser comes in the form of a microwave. 

    A megamaser involves some components within the galaxy (like gas) that are in the right physical condition to cause the amplification of the microwaves. 

    Megamasers are usually created when two galaxies violently collide in the universe. 

    Source: NASA  

    The record-breaking megamaser has been given the name 'Nkalakatha' [pronounced ng-kuh-la-kuh-tah] – an isiZulu word meaning 'big boss'. 

    The discovery was made by an international team of astronomers led by Dr Marcin Glowacki at the International Centre for Radio Astronomy Research (ICRAR) in Western Australia.

    Dr Glowacki said the hydroxyl megamaser – containing one atom of hydrogen and one of oxygen – was detected on the first night of a survey involving more than 3,000 hours of observations by the MeerKAT telescope.

    'This is the first hydroxyl megamaser of its kind to be observed by MeerKAT and the most distant seen by any telescope to date,' he said. 

    'It's impressive that, with just a single night of observations, we've already found a record-breaking megamaser. It shows just how good the telescope is.' 

    Megamasers are usually created when two galaxies violently collide in the universe, Dr Glowacki explained. 

    Inside a galaxy merger are hydroxyl molecules, composed of one atom of hydrogen and one atom of oxygen. 

    When one molecule absorbs a photon at 18cm wavelength, it emits two photons of the same wavelength.

    Megamasers are usually created when two galaxies violently collide in the universe. Inside a galaxy merger are hydroxyl molecules, composed of one atom of hydrogen and one atom of oxygen. When one molecule absorbs a photon at 18cm wavelength, it emits two photons of the same wavelength. When molecular gas is very dense, typically when two galaxies merge, this emission gets very bright and can be detected by radio telescopes such as the MeerKAT
    Megamasers are usually created when two galaxies violently collide in the universe. Inside a galaxy merger are hydroxyl molecules, composed of one atom of hydrogen and one atom of oxygen. When one molecule absorbs a photon at 18cm wavelength, it emits two photons of the same wavelength. When molecular gas is very dense, typically when two galaxies merge, this emission gets very bright and can be detected by radio telescopes such as the MeerKAT

    When molecular gas is very dense, typically when two galaxies merge, this emission gets very bright and can be detected by radio telescopes such as the MeerKAT.

    'When galaxies collide, the gas they contain becomes extremely dense and can trigger concentrated beams of light to shoot out,' Dr Glowacki said.  

    The team is using MeerKAT to observe narrow regions of the sky extremely deeply and will measure atomic hydrogen in galaxies from the distant past to now.

    The combination of studying hydroxl masers and hydrogen will help astronomers better understand how the universe has evolved over time. 

    'We have follow-up observations of the megamaser planned and hope to make many more discoveries,' Dr Glowacki said. 

    MeerKAT is a precursor instrument for the Square Kilometre Array – a global initiative to build the world's largest radio telescopes in Western Australia and South Africa. 

    According to Professor Tara Murphy at the University of Sydney's Institute for Astronomy, SKA will be able to make sensitive maps of the sky every day.

    'Within the next decade, the transcontinental Square Kilometre Array radio telescope will come online,' Professor Murphy said. 

    'We expect the power of this telescope will help us solve mysteries... but it will also open vast new swathes of the cosmos to exploration in the radio spectrum.'

    SKA WILL BE THE WORLD'S LARGEST RADIO TELESCOPE 

    The Square Kilometre Array (SKA), a joint project between Australia and South Africa, will be the world’s largest radio telescope. 

    More sensitive than any current radio telescope, it will enable scientists to study the universe in more detail than ever before. 

    The telescope will be located in South Africa and Australia, with the international headquarters located at Jodrell Bank, in the UK. 

    Nearly 200 mid-frequency dishes (including the existing MeerKAT facility which was officially launched in July 2018) will be located in the Karoo region of South Africa. 

    Artist's impression of the 3-mile (5km) diameter central core of Square Kilometre Array (SKA) antennas

    Artist's impression of the 3-mile (5km) diameter central core of Square Kilometre Array (SKA) antennas

    Around 130,000 low-frequency antennas will be located in Western Australia.

    Both sites are far from sources of radio frequency interference which will allow for very sensitive measurements to be undertaken. 

    The SKA will be made up of 2 instruments, SKA-mid (the dishes) and SKA-low (the antennas). 

    The signals from the dishes will be transported via optical fibre to a central computer where they will be combined using a technique called interferometry. 

    Similarly the signal from all of the antennas will also be combined and converted to scientific data that astronomers will use to study the universe. 

    Source: UKRI 

    08-04-2022 om 23:24 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.ASTRONOMERS DETECT GALACTIC LASER COMING FROM DEEP SPACE

    ASTRONOMERS DETECT GALACTIC LASER COMING FROM DEEP SPACE

    Astronomers Detect Galactic Laser Coming From Deep Space
    NASA/FUTURISM

    Megamaser

    A team of astronomers have discovered a laser — technically a “megamaser” — coming from a whopping five billion light years from Earth, making it the most distant of its kind ever detected, CBS News reports.

    That’s 58 thousand billion billion kilometers, if you’re keeping count. In other words, the time it took for the light to arrive here could be greater than the age of the solar system.

    No, it’s almost certainly not some ancient alien civilization pointing a gigantic laser pointer at the Earth from across the cosmos. The alternative is pretty epic too, though, because the megamaser is likely the result of two galaxies violently colliding, astronomers suggest.

    Big Collision

    The discovery could test what we already know about the evolution of galaxies and what happens when they merge with others.

    “When galaxies collide, the gas they contain becomes extremely dense and can trigger concentrated beams of light to shoot out,” Marcin Glowacki, lead author of a new study to be published in The Astrophysical Journal Letters, in a statement.

    Galactic collisions are some of the most violent events we know of in the Universe, releasing unimaginable amounts of energy in the process.

    “The OH megamasers act like bright lights that say: here is a collision of galaxies that is making new stars and feeding massive black holes,” said co-author Jeremy Darling from the University of Colorado in a separate blurb.

    Mere Lasers

    The finding is an important proof of concept for the South African observatory called MeerKAT, which scientists used to make the discovery.

    “This is the first hydroxyl megamaser of its kind to be observed by MeerKAT and the most distant seen by any telescope to date,” Glowacki said. “It’s impressive that, with just a single night of observations, we’ve already found a record-breaking megamaser. It shows just how good the telescope is.”

    Scientists are already excited by the prospect of future discoveries just like it.

    “MeerKAT will probably double the known number of these rare phenomena,” Darling said. “Galaxies were thought to merge more often in the past, and the newly discovered OH megamasers will allow us to test this hypothesis.”

    READ MORE: 

    More on galaxy mergers: 

    https://futurism.com/the-byte }

    08-04-2022 om 23:01 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART
    Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.SPACEX SUCCESSFULLY LAUNCHES FIRST ALL-PRIVATE MISSION TO THE SPACE STATION

    SPACEX SUCCESSFULLY LAUNCHES FIRST ALL-PRIVATE MISSION TO THE SPACE STATION

    SpaceX Successfully Launches First All-Private Mission to the Space Station
    AXIOM SPACE

    All-Private Launch

    It’s a historic moment in the history of spaceflight.

    SpaceX has successfully launched the first all-private crew of space tourists to the International Space Station, as part of Axiom Space’s Ax-1 mission.

    The Crew Dragon spacecraft took off from the Kennedy Space Center in Florida at around 11:17 am local time, taking one retired NASA astronaut and three paying passengers into orbit.

    “Godspeed, Axiom-1,” SpaceX commentators could be heard saying.

    Picture Perfect

    The launch went by without a hitch, which is to be expected at this point — it’s the sixth successful crewed launch of the spacecraft and the fifth to fly to the space station.

    Stage separation was confirmed just under three minutes into flight, “a picture perfect liftoff,” as SpaceX’s commentator called it.

    SpaceX’s drone ship managed to safely catch the rocket’s first stage minutes after delivering the payload into the upper atmosphere.

    Future of Space Tourism

    The trip was organized by SpaceX and Axiom Space, a private space company, which is also hoping to launch its own space station in the upcoming years.

    The crew will spend ten days in orbit, and eight on board the orbital outpost.

    It’s a watershed moment for the still nascent space tourism industry, a hint of many more launches like it in the future.

    More on Ax-1:

    https://futurism.com/the-byte }

    08-04-2022 om 22:48 geschreven door peter  

    0 1 2 3 4 5 - Gemiddelde waardering: 0/5 - (0 Stemmen)
    Categorie:ASTRONOMIE / RUIMTEVAART


    Afbeeldingsresultaten voor  welcome to my website tekst

    De bronafbeelding bekijken


    De bronafbeelding bekijken


    MUFON’s New Social Network

    MUFON’s New Social Network


    Mijn favorieten
  • Verhalen TINNY * SF
  • IFO-databank van Belgisch UFO meldpunt
  • Belgisch UFO meldpunt
  • The Black Vault
  • Terry's Theories UFO Sightings. Its a Youtube Channel thats really overlooked, but has a lot of great and recent sightings on it.
  • . UFO Institute: A cool guy who works hard
  • YOUTUBE kanaal van het Belgisch UFO-meldpunt
  • LATEST UFO SIGHTINGS

  • DES LIENS AVEC LE RESEAU FRANCOPHONE DE MUFON ET MUFONEUROP
  • BELGISCH UFO-NETWERK BUFON
  • RFacebook BUFON
  • MUFONFRANCE
  • MUFON RHÔNE-ALPES
  • MUFON MIDI-PYRÉNNÉES
  • MUFON HAUTE-NORMANDIE
  • MUFON MAROC
  • MUFON ALSACE LORRAINE
  • MUFON USA
  • Site du REUB ASBL

    Other links with friends / bloggers # not always UFOs
  • PANGRadio MarcSima
  • Blog 2 Bernward
  • Nederlandse UFO-groep
  • Ufologie Liège
  • NIBURU
  • Disclose TV
  • UFO- Sightings - HOTSPOT
  • Website van BUFON ( Belgisch UFO-Netwerk)
  • The Ciizen Hearing on Disclosure
  • Exopolitics Finland: LINKS

    LINKS OF THE BLOGS OF MY FACEBOOK-FRIENDS
  • ufologie -Guillaume Perrot
  • UFOMOTION
  • CENTRE DE RECHERCHE OVNI PARASPYCHOLOGIE SCIENCE - CROPS -
  • SOCIAL PARANORMAL Magazine
  • TJ Morris ACO Associations, Clubs, Organizations - TJ Morris ACO Social Service Club for...
  • C.E.R.P.I. BELGIQUE
  • Attaqued'un Autre Monde - Christian Macé
  • UFOSPOTTINGNEDERLAND
  • homepage UFOSPOTTINGNEDERLAND
  • PARANORMAL JOURNEY GUIDE

    WELCOME TO THIS BLOG! I HOPE THAT YOU ENJOY THE LECTURE OF ALL ISSUES. If you did see a UFO, you can always mail it to us. Best wishes.

    Beste bezoeker,
    Heb je zelf al ooit een vreemde waarneming gedaan, laat dit dan even weten via email aan Frederick Delaere op
     www.ufomeldpunt.be. Deze onderzoekers behandelen jouw melding in volledige anonimiteit en met alle respect voor jouw privacy. Ze zijn kritisch, objectief  maar open minded aangelegd en zullen jou steeds een verklaring geven voor jouw waarneming!
    DUS AARZEL NIET, ALS JE EEN ANTWOORD OP JOUW VRAGEN WENST, CONTACTEER FREDERICK.
    BIJ VOORBAAT DANK...


    Laatste commentaren
  • crop cirkels (herman)
        op UFO'S FORM CROP CIRCLE IN LESS THAN 5 SECONDS - SCOTLAND 1996
  • crop cirkels (herman)
        op UFO'S FORM CROP CIRCLE IN LESS THAN 5 SECONDS - SCOTLAND 1996
  • Een zonnige vrijdag middag en avond (Patricia)
        op MUFON UFO Symposium with Greg Meholic: Advanced Propulsion For Interstellar Travel
  • Dropbox

    Druk op onderstaande knop om je bestand , jouw artikel naar mij te verzenden. INDIEN HET DE MOEITE WAARD IS, PLAATS IK HET OP DE BLOG ONDER DIVERSEN MET JOUW NAAM...


    Gastenboek
  • Nog een fijne avond
  • Hallo Lieverd
  • kiekeboe
  • Een goeie middag bezoekje
  • Zomaar een blogbezoekje

    Druk op onderstaande knop om een berichtje achter te laten in mijn gastenboek Alvast bedankt voor al jouw bezoekjes en jouw reacties. Nog een prettige dag verder!!!


    Over mijzelf
    Ik ben Pieter, en gebruik soms ook wel de schuilnaam Peter2011.
    Ik ben een man en woon in Linter (België) en mijn beroep is Ik ben op rust..
    Ik ben geboren op 18/10/1950 en ben nu dus 73 jaar jong.
    Mijn hobby's zijn: Ufologie en andere esoterische onderwerpen.
    Op deze blog vind je onder artikels, werk van mezelf. Mijn dank gaat ook naar André, Ingrid, Oliver, Paul, Vincent, Georges Filer en MUFON voor de bijdragen voor de verschillende categorieën... Veel leesplezier en geef je mening over deze blog.
    Zoeken in blog


    LINKS NAAR BEKENDE UFO-VERENIGINGEN - DEEL 1
  • http://www.ufonieuws.nl/
  • http://www.grenswetenschap.nl/
  • http://www.beamsinvestigations.org.uk/
  • http://www.mufon.com/
  • http://www.ufomeldpunt.be/
  • http://www.ufowijzer.nl/
  • http://www.ufoplaza.nl/
  • http://www.ufowereld.nl/
  • http://www.stantonfriedman.com/
  • http://ufo.start.be/

    LINKS NAAR BEKENDE UFO-VERENIGINGEN - DEEL 2
  • www.ufo.be
  • www.caelestia.be
  • ufo.startpagina.nl.
  • www.wszechocean.blogspot.com.
  • AsocCivil Unifa
  • UFO DISCLOSURE PROJECT

  • Startpagina !


    ">


    Een interessant adres?

    Mijn favorieten
  • Verhalen


  • Blog tegen de regels? Meld het ons!
    Gratis blog op http://blog.seniorennet.be - SeniorenNet Blogs, eenvoudig, gratis en snel jouw eigen blog!