Dark Energy Measurement Sheds New Light on Universe's Expansion

Thursday, July 15, 2010 - 16:28 in Physics & Chemistry

(PhysOrg.com) -- Through observations of massive galaxy clusters, scientists have made the most precise measurements to date of the effects of dark energy and gravity on cosmological scales. This work is an important step toward understanding why the expansion of the universe is accelerating. Something is pushing our universe apart, faster and faster, with each passing moment, and future work using similar methods should determine whether that something is dark energy or a change in the way gravity works on cosmological scales.

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