a picture of a dust storm
A portion of the inner wall of the 60-mile Columbus Crater, located in the southern hemisphere
identified hydrated minerals in the layers, providing more evidence of past water
The landscape within a crater
"shoreline" of a hypothesized ancient ocean
picture of Phobos, the larger of Mars's two moons
On Mars, there is more than one type of ice
frozen carbon dioxide -- which shapes and reshapes the Martian landscape
surface erodes in scalloped ridges
ice warms into gas and expands
plumes and material is carried downwind
The bright white areas are frost and the swirling patterns have been carved by erosion
This ridge, located in the far north of Mars, may have been created by an ancient glacier
An impact crater is located in the center
high-resolution camera aboard NASA's Mars Reconnaissance Orbiter
Orbiter revealed complex textures
shaping the Martian landscape today
clipped from: www.nytimes.com 
