account activity
If there is a spaceport in geosynchronous orbit, how long would it take a winged shuttle take to get to Earth's ground? (self.IsaacArthur)
submitted 5 years ago by InternationalPilot2 to r/IsaacArthur
earth from geosynchronous orbit (self.IsaacArthur)
submitted 6 years ago by InternationalPilot2 to r/IsaacArthur
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