Rubidium atoms on China’s Tiangong space station fell with the same acceleration, upholding a cornerstone of Einstein’s ...
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Physicists put Einstein's 'happiest thought' to the test, uniting relativity and quantum mechanics
Physicists have proven a 100-year-old prediction of relativity by showing that Einstein's equivalence principle holds at ...
Physicists including Roger Penrose observed gravity’s effect on a falling quantum object for the first time, confirming ...
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