![](http://www.alamy.com/thumbs/6/897FD25B-DB6C-439B-AD71-477271363DE1/KRE9JX.jpg)
Troughs in Elysium Planitia
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Photo credit: © NASA Image Collection / Alamy / Afripics
License: Licensed
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Keywords: astronomy, copy, editorial, nasa, news, night, photograph, photography, rocket, sky, space, stock