Astronomers Find a Long-Lost Ocean on Mars

Sunday, March 8, 2015 - 03:03 in Astronomy & Space

Planetary scientists have figured out how much water filled a Martian sea four billion years ago—and it was a lot.

Read the whole article on National Geographic

More from National Geographic

Learn more about

Latest Science Newsletter

Get the latest and most popular science news articles of the week in your Inbox! It's free!

Check out our next project, Biology.Net