Mars hosts active sand dunes that migrate across the red landscape
In short: While Earth is the only other place in the solar system known to have active dunes, NASA's Curiosity rover has discovered something extraordinary. It has made an unscheduled stop to investigate the Bagnold Dunes, where sand is physically migrating across the Martian surface.
As part of its mission to climb Mount Sharp, the Curiosity rover has diverted from its path to conduct a close-up investigation of the Bagnold Dunes. Orbital imagery revealed that these dunes are not static; they migrate at a rate of approximately 3 feet per Earth year. This finding matters because Earth remains the only world in our solar system where active dunes have been explored. This discovery marks the first time researchers have visited active dunes anywhere else in the solar system. Such movement provides vital data regarding the planet's surface dynamics.
The landscape features massive geological structures, including one particular dune that stands about two stories high and spans a width equivalent to a football field. Curiosity, a rover roughly the size of a small SUV, is equipped with a sophisticated toolkit to analyze these shifting sands. This includes a 7-foot-long robotic arm and a laser designed to vaporize and study pinpoint spots of rock from a distance. The vehicle's dimensions are approximately 10 feet long and 9 feet wide. It also carries 17 different cameras to capture its surroundings.
The rover's presence in Gale Crater is part of a long-term effort to understand the history of Mars. Beyond studying the dunes, Curiosity has spent years searching for organic molecules—the chemical building blocks of life. In a significant finding, researchers determined that non-biological processes could not fully explain the abundance of organic compounds found in samples collected from the region's ancient mudstone. The rover is currently ascending the slopes of Mount Sharp. This mountain reaches a height of about 3 miles.
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Sources
- Summary by Intellect · source: Curiosity heads to active Martian dunes on This Week @NASA – November 20, 2015
- Also: Mars Science Laboratory: Curiosity Rover - NASA Science
- Also: NASA — NASA’s Curiosity Rover Captures a Martian Day, From Dawn to Dusk - NASA
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