Dry ice (carbon dioxide ice) sled streaks called linear gullies that appear on the sides of some sandy slopes during Martian spring. Credit:NASA, HiRISE, MRO,LPL(U.Arizona). via /r/spaceporn http://bit.ly/2GExRf1
via Tumblr http://bit.ly/2TM6FhR
Dry ice (carbon dioxide ice) sled streaks called linear gullies that appear on the sides of some sandy slopes during Martian spring. Credit:NASA, HiRISE, MRO,LPL(U.Arizona). via /r/spaceporn http://bit.ly/2GExRf1
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