Since the Cassini spacecraft discovered plumes of water vapor erupting from geysers on Enceladus nearly 20 years ago, Saturn's ice-covered ocean moon has been a hot topic.

The James Webb Space Telescope has now caught sight of the largest plume yet. The telescope's astonishingly sensitive eye measured an eruption of water vapor punching at least 10,000 kilometers (over 6,000 miles) out into space. That's around 20 times the size of Enceladus itself, and it has given scientists an unprecedented glimpse at how the moon's geysers supply material to Saturn's icy rings.