A massive cloud or plume has been spotted on Mars, and scientists aren’t sure what it is or how it got there.
The plume was first spotted by amateur astronomers in March 2012. Wayne Jaeschke, a patent attorney and member of the Association of Lunar and Planetary Observers, said the formation was so unusual he thought something was wrong with his camera.
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“Frankly, I’m puzzled by the observations,” Bruce Jakosky, an astronomer at the University of Colorado, Boulder and head of NASA’s Mars-atmosphere-observing MAVEN mission, told New Scientist. “I don’t understand how material can get that high and stay there for so long.”
