Doing Einstein Math on Space Twins

Keith's note: And of course since NASA now defines a "year in space" = 340 days it would take less or more time, depending on your point of view.
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Kepler Communications - Aether
Baen Books - The Spacetime War by Les Johnson

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This page contains a single entry by Keith Cowing published on March 3, 2016 1:14 AM.

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