NEWS | August 13, 2014
Tall Boulder Rolls Down Martian Hill, Lands Upright
The image is available online at:
http://mars.nasa.gov/mro/multimedia/images/?ImageID=6521
The shadow cast by the rock in mid-afternoon sunlight reveals it is about 20 feet (6 meters) tall. In the downward-looking image, the boulder is only about 11.5 feet (3.5 meters) wide. It happened to come to rest with its long dimension vertical. The trail it left on the slope has a pattern that suggests the boulder couldn't roll smoothly or straight due to its shape.
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, Pasadena, manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate in Washington. HiRISE, one of six science instruments on the orbiter, is operated by the University of Arizona, Tucson. The instrument was built by Ball Aerospace & Technologies Corp., Boulder, Colorado.
For more information about the Mars Reconnaissance Orbiter, which has been studying Mars from orbit since 2006, visit:
http://www.nasa.gov/mro and http://mars.nasa.gov/mro
For more information about HiRISE, visit:
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Guy Webster
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-6278
guy.webster@jpl.nasa.gov