Quote:
Originally Posted by JonClarke
I see no evidence as yet for Victoria being an ancient crater that is synchronous with the sediments, rather a much younger though eroded crater.
Regarding Sputnik, from the HiRISE imagery I now think that is is mostly likely an impact feature.
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Jon, the shape of the hole looks stange to me. Both in the 3-D image and in the HIRISE close-ups it looks more like a gash than a circular hole. See for instance this blow-up posted to Uplink.space.com:
http://uplink.space.com/attachments/...nnot.bro.5.jpg
Bob Clark