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Post Info TOPIC: Baryon Oscillation Spectroscopic Survey
Blobrana


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Cosmos speed-check probes dark energy

Scientists have produced their most precise measurement yet of the rate at which the early Universe was expanding.
They find that some three billion years after the Big Bang, the cosmos was pushing itself apart by another 1% every 44 million years.
It is the latest result to come from the Baryon Oscillation Spectroscopic Survey (BOSS).
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Blobrana


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Astronomers from the Sloan Digital Sky Survey Make the Most Precise Measurement Yet of the Expanding Universe

Astronomers from the Sloan Digital Sky Survey have used 140,000 distant quasars to measure the expansion rate of the Universe when it was only one-quarter of its present age. This is the best measurement yet of the expansion rate at any epoch in the last 13 billion years.
The Baryon Oscillation Spectroscopic Survey (BOSS), the largest component of the third Sloan Digital Sky Survey (SDSS-III), pioneered the technique of measuring the structure of the young Universe by using quasars to map the distribution of intergalactic hydrogen gas. Today, new BOSS observations of this structure were presented at the April 2014 meeting of the American Physical Society in Savannah, GA.
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