Evidence of Active Water on Mars

Mars water
NASA / JPL-Caltech / University of Arizona / Reuters

Martian Surface
On August 4, 2011, NASA released a series of images illustrating possible evidence of liquid water active on Mars today. This combination image, showing the planet's Newton crater, was made with 3-D modeling. The evidence lay in the dark markings on the slope, said to be a few feet to five yards in width.

Get the Latest Photos from Time.com
Get TIME photos and pictures of the week delivered directly to your inbox.