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forbes.com
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Russia sent trained dolphins to war in Syria.
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Virgin Orbit says it is close to launching a rocket to orbit for the first time, after it performed a successful test over the Pacific Ocean near Los Angeles.
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Matter tells space how to curve, and curved space tells matter how to move. That's the basic principle behind Einstein's General Relativity, which linked, for the first time, the phenomenon of gravity with that of spacetime and relativity. Place a mass down anywhere in the Universe, and the space around it will curve in response. But if you take that mass away, or move it elsewhere, what causes the spacetime to "snap back" to its unbent position?