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BOSS to Measure Dark Energy With Quasars Wednesday, September 17, 2008 - Anuradha Menon Home >> Headlines >> Space   
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The Sloan Digital Sky Survey (SDSS) uses a 2.5-meter telescope with a wider field of view than any other large telescope, located on a mountaintop in New Mexico called Apache Point and devoted solely to mapping the universe. We now know that some three-quarters of the universe consists of dark energy, whose very existence was unsuspected when telescope construction began in 1994 and still controversial when the first Sloan survey started in 2000. (source: newscenter.lbl.gov)
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