Boulder Tumbles Downhill on Mars Leaving Behind a Line Trail Visible From Space

A boulder tumbling  down a hill on Mars left behind a 500-meter jagged line (about a third of a mile) and is visible from space as shown in the photo above.

The Mars Reconnaissance Orbiter currently orbiting the Red Planet spotted the boulder and took some photos using the High Resolution Imaging Science Experiment (HiRISE) camera. This High res camera is onboard NASA's Mars Reconnaissance Orbiter. 

Scientists at NASA have calculated the boulder is 6 meters (20 feet) tall and 3.5 meters (11.5 feet) wide.  The trail it left on the slope has a pattern that suggests the boulder couldn't roll smoothly or straight due to its shape.

The Mars Reconnaissance Orbiter (MRO) launched in 2005 on a search for evidence of water on Mars.

Next up, MRO will have a chance to monitor Mars' close encounter with Comet Siding Spring, which is expected to fly by the Red Planet in October.



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