Thursday, September 25, 2008
Unique Dark-energy Probe To Measure More Than A Million Galaxies And Quasars
ScienceDaily (Sep. 25, 2008) — 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.
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