Last Updated: Wednesday, November 14, 2012, 11:15
Astronomers from the Sloan Digital Sky Survey (SDSS-III) have made the first measurement of the cosmic expansion rate just three billion years after the Big Bang.
Last Updated: Monday, February 20, 2012, 13:23
Using powerful X-rays to measure lunar rock densities, scientists have found why our Moon, contrary to Earth, has no active volcanoes.
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