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Old 11-11-2010, 09:18 AM   #1
BendtheBar
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Default Giant space bubbles baffle astronomers

Giant space bubbles baffle astronomers

Giant space bubbles baffle astronomers - Telegraph

Quote:
The two vast structures, stretching to the north and to the south of the centre of the Milky Way, are so big that a beam of light, travelling at 186,282 miles per second, would take 50,000 years to get from the edge of one to the edge of the other.

The previously unseen bubbles were discovered by astronomer Doug Finkbeiner, of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, using NASA's Fermi Gamma-Ray Telescope. He admitted yesterday: "We don't fully understand their nature or origin."

They span more than half the visible sky, from the constellation of Virgo to the constellation of Grus, and are thought to be millions of years old. They were not noticed before because they were lost in a fog of gamma radiation across the sky.
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