It's a familiar view to those who watched Matt Damon's character Mark Watney fight for survival in "The Martian," yet it's one we've never actually seen up close until now: rippling sand dunes on Mars.
It's a familiar view to those who watched Matt Damon's character Mark Watney fight for survival in "The Martian," yet it's one we've never actually seen up close until now: rippling sand dunes on Mars.