BBC News Science and Environment, 19 May 2011
By Paul Rincon Science reporter, BBC News
First results from a major astronomical survey using a cutting-edge technique appear to have confirmed the existence of mysterious dark energy.
Dark energy makes up some 74% of the Universe and its existence would explain why the Universe appears to be expanding at an accelerating rate.
The finding was based on studies of more than 200,000 galaxies.
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