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Astronomy Gets Polarized

New angles on exploding stars and the cosmos' first light

By
10:17am, July 3, 2006

Astronomers usually count themselves lucky if a telescope collects enough light to image a distant star or galaxy. But some researchers are getting pickier. No longer content with the average light wave, they don the astronomical equivalent of polarizing sunglasses to eschew all but the tiny fraction of light waves that are polarized.

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