News | 03.30.2012
When Dark Energy Turned On
"There's been a lot of talk about using galaxy maps to find out what's causing accelerating expansion," says David Schlegel of the U.S. Department of Energy's Lawrence Berkeley National Laboratory, the principal investigator of BOSS. "We've been making a map, and now we're using it — starting to push our knowledge out to the distances when dark energy turned on."
Image Credits: (header) European Space Agency & NASA; (left) E.M. Huff, the SDSS-III team, and the South Pole Telescope team. Graphic by Zosia Rostomian. ; (background) NASA, ESA and H.E. Bond (STScI)