Cassini confirms Einstein's theory
By Ron Cowen, 15:49 PM April 15, 2008
No one can accuse the Cassini spacecraft of getting a free ride. En route to a 2004 rendezvous with Saturn, the craft has already been put to work, verifying a key prediction of Albert Einstein's general theory of relativity. Cassini met that challenge with findings 50 times as accurate as previous measurements.
A cornerstone of Einstein's theory is the mind-bending concept that gravity is equivalent to the curvature of space-time. Without gravity, space-time is like a flat rubber sheet, and ...
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