Astronomers find traces of ancient light in the activity of bright, distant galaxies
Astronomers find traces of ancient light in the activity of bright, distant galaxies
By Stephen Ornes
Web edition: November 26, 2012
Blazars are bright galaxies that send high-powered radiation jets directly toward Earth. Here, the blazars appear as green dots; the Milky Way glows orange in the middle.
Credit: NASA, DOE, Fermi LAT Collaboration
A new light-detection technique will allow scientists to spot light from all stars in their field of view and going back to?early in the formation of the universe.
?[This way of looking] provides us with a review of the entire history of cosmic star formation, including the very first epochs of star formation in the very early universe,? says Volker Bromm of the University of Texas at Austin.
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