Ceres Geology |
Ceres Geology |
Jan 22 2014, 06:14 PM
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
Paper out tomorrow: http://www.bbc.co.uk/news/science-environment-25849871
Very exciting that we will visit this world soon! |
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Jan 22 2014, 07:45 PM
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
Thank you for the heads up.
Hydroxyl. OH have previously been found to make up the main part of Ceres extremely rarefied atmosphere. So finding water vapour is not completely unexpected, it might be the source of the hydroxyl after water molecules have been dissociated by UV-radiation from the Sun. BBC stated 6 kg per second, and the diagram of the paper suggest it only happens when Ceres is in certain parts of its orbit. So I place my bet that its a slow sublimation, even though -35 C as the warmest summer day isn't exactly balmy. |
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