Biggest 3-D Universe Map Created
Andrew Fazekas
for National Geographic News
Published August 9, 2012
A new 3-D map of the universe is the biggest ever made, providing the most detailed view of the sky yet, astronomers say.
The crown jewel of the six-year Sloan Digital Sky Survey III (SDSS III), the map was created by targeting nearly a million galaxies up to 12 billion light-years from Earth—in part by using a spectrometer that can measure the distances to thousands of separate galaxies simultaneously.
Watch a fly-through video of the 3-D map.
(at link)
"The current survey is the most extensive ever done and has more than three times the volume of the previous record-holder," said project director Daniel Eisenstein, an astronomer at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts.
"Our ultimate goal is to survey a quarter of the entire sky, and we are only about a third of the way done."
more
http://news.nationalgeographic.com/news/2012/07/120809-universe-3d-map-space-science-dark-energy/
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