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Light-Speed Spaceships Would Have Trouble Phoning Home
(www.iflscience.com)
This is a most excellent place for technology news and articles.
Gravity travels at c. The Alcubierre drive tried to use bubbles in spacetime to "bend the rules" in order to result in apparent >c velocities but recent simulations indicate the bubble becomes unstable when attempting to exceed c.
Then we need the Tim (Allen) Taylor solution.
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