Ancient Mars Volcano Blast Hints at Planet's Wet History

Wednesday, May 9, 2012 - 10:01 in Astronomy & Space

Mars' atmosphere may have been roughly 20 times thicker 3.5 billion years ago than it is today.

Read the whole article on Live Science

More from Live Science

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