News tagged with dark energy

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Image: Einstein's theory fights off challengers

(PhysOrg.com) -- Two new studies have put Einstein's General Theory of Relativity to the test like never before, using observations of galaxy clusters to study the properties of gravity on cosmic scales.

dateMar 24, 2011 in Astronomy
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Hubble rules out one alternative to dark energy

(PhysOrg.com) -- Astronomers using NASA's Hubble Space Telescope have ruled out an alternate theory on the nature of dark energy after recalculating the expansion rate of the universe to unprecedented accuracy.

dateMar 14, 2011 in Astronomy
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Super-sharp radio 'eye' remeasuring the universe

(PhysOrg.com) -- Using the super-sharp radio "vision" of astronomy's most precise telescope, scientists have extended a directly-measured "yardstick" three times farther into the cosmos than ever before, an ...

dateFeb 19, 2011 in Astronomy
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