Towering Mars plumes remained unexplained

February 16, 2015 6:14 PM

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Towering Mars plumes remained unexplained

In a new study, published this week in the journal Nature, scientists recount the strange occurrence and survey the various attempts to illuminate the plumes' origins or cause.

The phenomenon was observed twice, over the course of two ten-week long periods, in March and April of 2012. What began as a wide blob of dust slowly extended into a towering plume -- a finger of debris that stretched some 621 miles across, and the same distance lengthwise out into space.

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