This composite of images spaced some 5 to 9 days apart traces the retrograde motion of Mars through Earth’s night sky. [1536 x 1024] via /r/spaceporn https://ift.tt/2z1MRih
via Tumblr https://ift.tt/2QrkJf5
This composite of images spaced some 5 to 9 days apart traces the retrograde motion of Mars through Earth’s night sky. [1536 x 1024] via /r/spaceporn https://ift.tt/2z1MRih
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