View Full Version : Nobody Knows What These Mysterious Plumes are on Mars

2015-Feb-17, 05:00 PM
In March 2012, amateur astronomers began observing unusual clouds or plumes along the western limb of the red planet Mars. The plumes, in the southern hemisphere rose to over 200 kilometers altitude persisting for several days and then reappeared weeks later. So a group of astronomers from Spain, the Netherlands, France, UK and USA have […]

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