Confronting the Credibility Gap for Crewed Exploration of Mars

Re:Confronting the Credibility Gap for Crewed Exploration of... by nonbel on Wednesday December 21, 2016 @12:10PM (#13230718)

>"General Relativity however simplifies to Newtonian gravity"

I still don't see how this is possible. In GR gravity travels at the speed of light, in Newtonian mechanics it is instantaneous. I have been unable to find an acceptable explanation for how these two very different universes can be compatible.

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Re:Confronting the Credibility Gap for Crewed Exploration of... by Crespyl on Wednesday December 21, 2016 @02:37PM (#13231957)

I think the point is that they are compatible at sufficiently small scales.

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Re:Confronting the Credibility Gap for Crewed Exploration of... by nonbel on Wednesday December 21, 2016 @03:17PM (#13232248)

You really cannot introduce any lag at all and have newtonian gravity work. Try it, the system will soon fly apart.

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