Leaky galaxies may have brought early universe out of darkness

October 11, 2014 1:00 PM

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Leaky galaxies may have brought early universe out of darkness

The star-forming Galaxy J0921+4509 offers astronomers clues on what possibly led to the lighting up of the universe after an age of darkness. (Photo : Public Domain)

For nearly 400 million years in its early history, the universe was very dark until the first star-producing galaxies started to produce ultraviolet light that eventually lighted up the cosmos.

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