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Clocking an Accelerating Universe: First Results from BOSS

Clocking an Accelerating Universe: First Results from BOSS | Amazing Science | Scoop.it

“BOSS’s first major cosmological results establish the accurate three-dimensional positions of 327,349 massive galaxies across 3,275 square degrees of the sky, reaching as far back as redshift 0.7 – the largest sample of the universe ever surveyed at this high density,” says Martin White of Berkeley Lab’s Physics Division, a professor of physics and astronomy at the University of California at Berkeley and chair of the BOSS science survey teams. “BOSS’s average redshift is 0.57, equivalent to some six billion light-years away. BOSS gives that distance to within 1.7 percent – 2,094 megaparsecs plus or minus 34 megaparsecs – the most precise distance constraint ever obtained from a galaxy survey.”

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