I see ice on Mars!

Image of full disc of Mars

Mars is the fourth planet from the Sun. We see ice on the surface near the poles. Our spacecraft studying Mars have also found evidence of ice below the surface. Many areas on Mars appear to have been shaped by flowing water. Some scientists think there was once lots of liquid water on Mars. Where did it go? Could there still be liquid water underneath the surface? Could there be microscopic life in the ice or water?
Closeup image of Mars South Pole ice cap in spring.

Ice cap at the south pole of Mars during spring. The solid white part in the center is the permanent ice cap that doesn't disappear in the summer. Image from Mars Global Surveyor.
Closeup image of Mars South Pole ice cap in summer.

Ice cap at the south pole of Mars during summer. The ice cap is much smaller than in winter and spring.

Image from Mars Global Surveyor.
Image of water markings on Mars surface.

This image of Mars surface looks similar to areas on Earth where water has flowed and shaped the land.

Image from Mars Global Surveyor.