Mar. 30, 2011 | 14:31 PDT | 21:31 UTC
Today the MESSENGER mission held a press briefing to show off some of the first images and other data that are streaming in from the spacecraft, now that it has entered Mercury orbit. Before I get to the more substantial stuff I'll just post my favorite image released today, a dramatically lit view of terrain near the north pole, terrain that hasn't before been viewed by a spacecraft. It's covered with secondaries; there are chains of craters; and the low lighting makes it easy to spot the characteristic undulating ridge of one of Mercury's ubiquitous thrust faults, signs that the entire planet has shrunk. 
email: info@als-alexander.org, or interalex2@gmail.com
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