This illustration shows how astronomers believe the universe developed from the "Big Bang" 13.7 billion years ago to today
This illustration shows how astronomers believe the universe developed from the "Big Bang" 13.7 billion years ago to today NASA/WMAP Science Team/MCT
This illustration shows how astronomers believe the universe developed from the "Big Bang" 13.7 billion years ago to today NASA/WMAP Science Team/MCT

Politics & Government

October 13, 2009 4:29 PM

Astronomers seek to explore the cosmic Dark Ages

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