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Slope + Mars + Boulder = Rolling Mars Boulder

17 Oct 2009, 10:45 UTC
Slope + Mars + Boulder = Rolling Mars Boulder
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It may only be a large rock, but images like this drive home the significance of the HiRISE instrument on board NASA’s Mars Reconnaissance Orbiter; it enables us to see recent geological activity on a planet we often view as being “dead.”
This boulder (approximately 6 meters-wide) had come to a stop at the bottom of [...]Post from: Astroengine.comSlope + Mars + Boulder = Rolling Mars Boulder

The 6 meter-wide boulder as imaged by HiRISE (to supersize the pic, click on it - 9MB)
It may only be a large rock, but images like this drive home the significance of the HiRISE instrument on board NASA’s Mars Reconnaissance Orbiter; it enables us to see recent geological activity on a planet we often view as being “dead.”
This boulder (approximately 6 meters-wide) had come to a stop at the bottom of the sloping wall of an impact crater. The path the boulder took is obvious as it left a series of prints in the Martian regolith as it bounced and rolled. The darker material that appears to have flowed around the rock is relatively fresh dry dust and sand that has also been dislodged from the top of the slope, falling ...

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