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Andrew M. Webb
AndrewM_Webb
A GPS satellite has a very accurate clock, and transmits its position and time. The signal expands out at the speed of light.When you receive a signal from one satellite,
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Let's ride a Martian space elevator—from Pavonis Mons to areostationary orbit!The left hand side looks down on the north pole, and the ellipse shows at each moment the free-fall trajectory
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An animation showing how rockets get to orbit, with details in the thread 1/(Animation at 10x real time) The dot on the LHS shows the position of the rocket. The
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