Chandra blog
Travel to the hottest, most energetic, and some may say strangest corners of the cosmos with NASA's Chandra X-ray Observatory. We look at black holes, exploded stars, and the fate of the Universe – sometimes all before lunch.
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Cool Astronomy
Albert Einstein's theory of General Relativity holds up
Using observations of galaxy clusters from the Chandra X-Ray Center, two teams of scientists have tested Albert Einstein's theory of General Relativity against two competing theories of gravitation.








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