Posts by Mark
In order for an orbit to be stable in the short term, it needs to be within the Hill sphere of its primary. For a circular orbit, the radius of this sphere is approximately: $$r = a\sqrt[3]{\frac...
Answer
There's a famous saying in science fiction: "Relativity, causality, FTL: pick two". I choose causality and FTL. In a Newtonian universe, where there's a privileged reference frame, the speed of l...
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physics
