Apr 25, 2013
NBC News - Einstein's gravity theory passes toughest test yet, Apr 25, 2013
"By Clara Moskowitz Space.com An extreme pair of superdense stars orbiting each other has put Einstein's general theory of relativity to its toughest test yet, and the crazy-haired physicist still comes out on top. About 7,000 light-years from Earth, an exceptionally massive neutron star that spins around 25 times a second is orbited by a compact, white dwarf star. The gravity of this system is so intense that it offers an unprecedented testing ground for theories of gravity."
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