Images indicate the surface of comet 67P/Churyumov-Gerasimenko was a very active place during its most recent trip through the solar system, says a new study.
The images show the comet's surface is full of growing fractures, collapsing cliffs and massive rolling boulders. Moving material buried some features on the comet's surface and exhumed others.
"As comets approach the sun, they go into overdrive and exhibit spectacular changes on their surface," said Ramy El-Maarry, study leader. which gave us the chance to look at a comet in ultra-high resolution for more than two years."