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Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System.

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Soffen Crater Floor

Dr. Gerald A. Soffen (February 7, 1926 — November 22, 2000) was a project scientist for the NASA’s Viking program of Mars landers.

Layers in a Valley Wall

Also captured in a Context Camera image, the objective of this observation is to examine a beautiful view of many layers in a valley wall near Auqakuh Vallis.

A Scarp in the Arabia Region

Pictured here appears to be the edge of a blast radius of a large meteorite impact crater with smaller and more recent cratering interrupting its circumference.

Hematite-Rich Deposits in Capri Chasma

Capri Chasma is located in the eastern portion of the Valles Marineris canyon system, the largest known canyon system in the Solar System. Deeply incised canyons such as this are excellent targets for studying the Martian crust, as the walls may reveal many distinct types of bedrock.

Secondary Craters

This image of a southern mid-latitude crater was intended to investigate the lineated material on the crater floor. At the higher resolution of HiRISE, the image reveals a landscape peppered by small impact craters.

Layers in Blocks

The objective of this observation is to examine layers exposed in small blocks and in a butte in eastern Arabia Terra, in the Northern Hemisphere of Mars.

Layered Bedrock

This un-named crater in southwestern Arabia Terra contains a treasure! Layered sediments are the key to the puzzle of Martian history. They tell us about the conditions that existed when the sediments were deposited, and how they changed over time.

Plains South of Valles Marineris

This enhanced-color sample reveals the incredible diversity of landforms on some Martian plains that appear bland and uniform at larger scales.