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发帖数: 1994 | 1 SEATTLE--Do gravity's tentacles cross space at the speed of light? Albert Einstein thought so, and two scientists now claim to have proved him right. Their results, described as the first measurement of gravity's speed, is based on observations of
Jupiter bending the light from a quasar. However, some physicists think the research--announced here on 7 January at a meeting of the American Astronomical Society--has fatal flaws.
Isaac Newton thought gravity acted instantaneously, but Einstein's gen |
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