See some of Mercury never before seen.
Planetary Society Weblog: MESSENGER gets closer to Mercury
Quote:
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Unlike the first one I posted, there's quite a lot of detail visible in this one -- and again, this is all territory previously unseen by spacecraft. There's a nice big basin near the bottom of the crescent, similar to (and maybe a little bigger than) the Tolstoj one that was visible below Caloris in the outbound images from the first flyby. [...] One more day and all that detail will be revealed! Well, a little more than that -- we have to wait nearly a day after the flyby for the images to start coming down.
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Closest approach:
2008, October 6, 0140 PDT, Monday
2008, October 6, 0440 EDT, Monday
2008, October 6, 0840 UTC, Monday
About 13-1/2 hours to closest approach