Chandra, Gravity, and Relativity

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Chandra, Gravity, and Relativity

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1richardbsmith
abr. 15, 2010, 9:26pm

http://chandra.harvard.edu/photo/2010/a3376/

"no evidence was found that gravity is different from General Relativity on scales larger than 130 million light years"

Does this mean that relativity can still explain universe expansion without modification or is some modification still needed?