![Gullies fringe the edge of southern Mars's Hale crater. On Earth, these structures usually form through ... Gullies fringe the edge of southern Mars's Hale crater. On Earth, these structures usually form through ...](https://static.nationalgeographicla.com/files/styles/image_3200/public/mars-ice-water-01.jpg?w=1190&h=863)
Gullies fringe the edge of southern Mars's Hale crater. On Earth, these structures usually form...
Fotografía de NASA, JPL Cal-techIn 2004, the NASA Mars rover Opportunity found sphere-like grains nicknamed...
Fotografía de NASA, JPL, Cornell, UsgsAlluvial fans are gently sloping wedges of sediments laid down by flowing water. Some of the...
Fotografía de NASA, JPL Cal-tech, Univ. of ArizonaIn 2015, scientists found dark streaks flowing down some Martian hillsides. Initially, salty liquid...
Fotografía de NASA, JPL Cal-tech, Univ. of ArizonaIn October 2017, scientists unveiled evidence that 3.7 billion years ago, Mars's Eridania basin was...
Fotografía de NASA, JPL Cal-techGullies snake down the northwest rim of Hale crater. It's unclear how the gullies formed, but some...
Fotografía de NASA, JPL Cal-tech, Univ. ArizonaIn 2012, NASA's Curiosity rover found the remains of a stream that once ran vigorously across...
Fotografía de NASA, JPL Cal-techThe pinkish, scaly texture is Martian bedrock that water altered long ago, forming clay-bearing...
Fotografía de NASA, JPL Cal-tech![loading](/images/ng-logo-animated.gif)