Curiosity Rover on Mars Snaps Epic Selfie with Sand Dunes (Photo)

NASA's Mars rover Curiosity has snapped a selfie featuring sunshine and lots of sand, but it's no vacation pic. The car-size Curiosity rover was hard at work investigating Namib Dune — part of a larger complex of shifting dark Martian sand called Bagnold Dunes — when it captured the photo on Jan. 19. Curiosity has been studying Bagnold Dunes for about two months now, helping mission scientists better understand how the wind creates and shapes dune fields on Mars.