NASA - National Aeronautics and Space Administration

Slide Show: Mars Global Surveyor

Gullies, dunes and more. See just a few highlights from the spacecraft that has orbited Mars for nearly ten years.

Groundwater May be Source for Erosion in Martian Gullies

New Gully Deposit in a Crater in the Centauri Montes Region

New Gully Deposit in a Crater in Terra Sirenum

Fresh Crater in Arabia Terra With Light-Toned Ejecta

Before-and-After Look at Impact Craters

New Craters

Recent Changes on Mars

Spacecraft at Mars

Rover Tracks