Why signs of life on Mars remain so mysterious

Odd Martian meteorites traced back to largest volcanic structure in the solar system

Experience searching for ancient signs of life on Mars

Why NASA thinks this crater is the best spot to search for life on Mars

Explore Nat Geo

  • Animals
  • Environment
  • History & Culture
  • Science
  • Travel
  • Photography
  • Space
  • Adventure
  • Video

About us

Subscribe

  • Magazines
  • Newsletter
  • Disney+

Follow us

Copyright © 1996-2015 National Geographic Society. Copyright © 2015-2021 National Geographic Partners, LLC. All rights reserved