This image released March 21, 2013 by the ESA and Planck Collaboration shows the afterglow of the Big Bang, the cosmic microwave background, as detected by the European Space Agency's Planck space ... more 
This image released March 21, 2013 by the ESA and Planck Collaboration shows the afterglow of the Big Bang, the cosmic microwave background, as detected by the European Space Agency's Planck space probe. The radiation was imprinted on the sky when the universe was 370,000 years old. It shows tiny temperature fluctuations that correspond to regions of slightly different densities, representing the seeds of all future structure: the stars and galaxies of today. (AP Photo/ESA, Planck Collaboration via NASA) less 
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Associated Press | Photo By ESA, Planck Collaboration via NASA
Thu, Mar 21, 2013 12:18 PM EDT