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Yes I think that radar idea is quite correct. I now recall Elon/SpaceX explaining that this rocket (BFR or whatever) should be able to land on any solid body in
by cryptoz 7y ago
Yes I think that radar idea is quite correct. I now recall Elon/SpaceX explaining that this rocket (BFR or whatever) should be able to land on any solid body in the solar system. This would eliminate barometers and GPS for long-term solutions, but keeping radar/lidar and other light-based imagery in the running.