Subscribe Now! National Geographic Magazine $15
Visit our Online Shops

Sign up for free

Newsletters

Once a month
get new photos
and expert tips.

Martian Dunes

Photo: Martian dunes
Passing over Herschel basin, the Mars Global Surveyor's (MGS) high-resolution camera photographed this unusual desert, with dunes that appear to be frozen in place. MGS images have intensified debates about the role of water and the chances of finding life on Mars. Said one scientist: "The biggest thing to come out of the MGS images is bafflement."
Photograph courtesy NASA/JPL/Malin Space Science Systems

Space Topics

SPECIAL ADVERTISING SECTION

Photo: 2009 Winner

Photo Contest

Find out who takes home the Grand Prize!

Photo: Man carrying a kayak

Adventure Videos

Check out adventure videos from our West Coast Adventure Editor Steve Casimiro and go "Behind the Lens."

Natural Disasters

Photo: A tornado

Get the science behind avalanches, tsunamis, and more.

Support Conservation

Photo: Two penguins

Help conserve the world's natural resources.