New Evidence of a Watery Past on Mars

Rock Formations Suggest Region Once Drenched in H20

A closeup of a rock outcrop on Mars' Meridiani Planum.

hide captionA closeup of a rock outcrop on Mars' Meridiani Planum. Scientists say the texture and composition of the rocks in this region suggests it was once drenched in water.

NASA/JPL/US Geological Survey

NASA says it's found new evidence that water may have once flowed on the Red Planet. Scientists studying samples of rock analyzed by the Mars rover Opportunity say they see chemical signs of contact with water. NPR's Joe Palca reports.

Comments

 

Please keep your community civil. All comments must follow the NPR.org Community rules and terms of use, and will be moderated prior to posting. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.

Support comes from: