Variety of fracture networks on comet 67P/C-G. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Extreme thermal stresses experienced by a comet as it orbits around the Sun could explain the extensive fracturing thought to drive its long-term surface erosion, say Rosetta scientists analysing high-resolution images of Comet 67P/Churyumov-Gerasimenko’s surface.
M. Ramy El-Maarry and his team identified 3 distinct settings in which the fractures occur: networks of long narrow fractures, fractures on cliffs and fractured boulders...
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