RT @RonBaalke: 45 years ago today (1971), Mars 2 went into orbit around Mars. One of the few successful Mars missions by USSR (30+… twitter.com/i/web/status/8…
RT @RonBaalke: 45 years ago today (1971), Mars 2 went into orbit around Mars. One of the few successful Mars missions by USSR (30+… twitter.com/i/web/status/8…