Tag: baryonic oscillation
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Baryon Oscillation Spectroscopic Survey Measures the Universe’s Expansion and Dark Energy
One of nature’s biggest mysteries, dark energy, is being explored thanks to a deceptively simple tool that David Schlegel came up with. 2,200 aluminum plates, about the size of a manhole cover, each one drilled with a specific pattern of holes that match the arrangement of galaxies in a particular section of the sky, are…