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CfA Press Release Images
 
 Release No.: 04-15 Illuminating The "Dark Ages" Of The Universe
For Release: May 3, 2004

artist's conception depicting formation of the first starsThe cosmic "dark ages" ended when clouds of hydrogen, glowing red inthisartist's conception, came together to form the first stars. CfAtheoristsAbraham Loeb and Matias Zaldarriaga have illuminated those dark ages,showing that astronomers can detect the first atoms in the early universebylooking for the shadows they cast against the cosmic microwavebackground.Credit: David A. Aguilar, Harvard-Smithsonian Center for Astrophysics

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