NASA's Messenger spacecraft zoomed past Mercury yesterday, sending back a set of luminous images that look like they were taken by celebrated nature photographer Ansel Adams in space. Here you can see the bright pocks left by recent meteors crashing to the planet's surface, opening up complicated webs of cracks. Want to see those cracks close up?
Of course you do. Most of this region of the planet has never before been photographed. The stark shadows you see in the ridges here are caused by the area's proximity to the dividing line between night and day on the planet, which exists in a constant state of boiling heat or freezing cold. Stunning New Views of Mercury [via Space]