For half the world, the Sun will be briefly reduced to a blazing ring surrounding a sombre disk on Friday, when an annular eclipse races from central Africa to eastern Asia, astronomers say.
Space Exploration
Jan 13, 2010
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(PhysOrg.com) -- The corona is the hot outer region of the sun's atmosphere. The corona is threaded by magnetic fields that loop and twist upwards from the sun's surface, driven by motions of its dense atmosphere.
Astronomy
Dec 11, 2009
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Astronomers using the twin 10-meter telescopes at the W. M. Keck Observatory in Hawaii have explored one of the most compact dust disks ever resolved around another star. If placed in our own solar system, the disk would ...
Astronomy
Sep 24, 2009
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