Advocate86114 karma2017-02-22 20:34:23 UTC
So if we were to imagine earth as the planet closest to this star, how many of the other 6 planets would we have visited with satellites, rovers, manned orbits, manned landing, etc.?
I am trying to imagine how close they all are together in a way that is fun.
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Advocate861 karma2015-07-11 17:28:33 UTC
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