Mysterious image reveals big avalanche on Mars
Just after the discovery of water on the Red Planet, another image reveals the complexity of Mars.
HiRISE (High Resolution Imaging Science Experiment) captured a photograph of what appears to be a massive avalanche on the planet. According to the HiRISE website, the camera on board of the orbiter monitors the North Polar deposits on Mars during this season to spot similar phenomena and track eventual patterns. The image shows a white cloud of material falling down a brick-red cliff and it's most likely composed of carbon dioxide frost (dry ice) from the layers above.
The avalanche measured more than 20 meters (65 feet) across and it may have been caused by the rise in temperature in the North Polar region typical of the season. This comes as a reminder that Mars is a very active planet, with its seasons, changing sand dunes and streaks. Another avalanche was captured in 2011 and this is what it looked like:
In case you missed it, see these photos showing signs of water on Mars:
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