STK102230MU.S. Army Soldier looks out over the village of Dingak, Afghanistan.
RMR100100SThe view from the rim of the caldera of Olympus Mons on Mars.
WMY100008SAlien flora flourishes in an impact crater on an earth-like planet.
WMY100022SArtist's concept of an impact crater on Jupiter's moon Ganymede, with Jupiter on the horizon.
WMY100050SIllustration of the Argyre impact basin in the southern highlands of Mars.