File:Gullies in the southern highlands of Mars.jpg

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English: Gullies rake across the raw landscape of Mars in an image released this week by the Mars Reconnaissance Orbiter's HiRISE camera.

Some four billion years ago, a comet or asteroid splashed onto the southern highlands of Mars, creating the Argyre Impact Basin just south of the gullies.

After the impact, water or lava flow into the basin may have carved these gullies, which are more than 3.6 miles (6 kilometers) long.
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Source http://news.nationalgeographic.com/news/2014/01/140124-best-new-space-281-science-chile-mars-stars-lagoon/?google_editors_picks=true
Author NASA/JPL/UNIVERSITY OF ARIZONA
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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current15:51, 25 January 2014Thumbnail for version as of 15:51, 25 January 2014989 × 742 (208 KB)Tillman{{Information |Description ={{en|1=Gullies rake across the raw landscape of Mars in an image released this week by the Mars Reconnaissance Orbiter's HiRISE camera. Some four billion years ago, a comet or asteroid splashed onto the southern highland...
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