Just thought this was very cool...

Mariner 10's three passes by Mercury provided information on less than half of the planet.

"Probably the first thing that most of us want to see is what the other 55 percent of Mercury looks like," said Vilas.

http://news.yahoo.com/s/ap/20080114/ap_on_sc/mercury_messenger

Check out where it is and how close Messenger is to Mercury...

http://messenger.jhuapl.edu/whereis/index.php

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UPDATE:

http://news.yahoo.com/s/nm/20080114/us_nm/space_mercury_dc

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European-Japanese mission to Mercury clears key hurdle

http://news.yahoo.com/s/afp/20080118/wl_asia_afp/spaceeuropemercury_080118191642

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Mercury is shrinking, volcanic

"The first pictures from the unseen side of Mercury reveal the wrinkles of a shrinking, aging planet with scars from volcanic eruptions and a birthmark shaped like a spider."

http://news.yahoo.com/s/ap/20080130/ap_on_sc/mercury_messenger

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Probe detects "spider" crater on Mercury

"A NASA probe that shot past Mercury this month detected a puzzling geological feature that scientists on Wednesday labeled "The Spider" and found evidence of past volcanic activity on the closest planet to the sun."

http://news.yahoo.com/s/nm/20080130/sc_nm/space_mercury_dc

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