2011年9月30日 星期五

BBC News - Science & Environment: 'Hollows' mark Mercury's surface

BBC News - Science & Environment
The latest stories from the Science & Environment section of the BBC News web site.
'Hollows' mark Mercury's surface
Sep 30th 2011, 13:28

Nasa's Messenger probe sees great swathes of shallow, rimless depressions on the surface of Mercury

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