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To: HG who wrote (392)	11/30/2005 12:00:05 AM
From: HG	Read Replies (1) of 536

news.yahoo.com LOS ANGELES - Astronomers have discovered what they believe is the birth of the smallest known solar system. Peering through ground- and space-based telescopes, scientists observed a brown dwarf — or failed star — less than one hundredth the mass of the sun surrounded by what appears to be a disk of dust and gas. The brown dwarf — located 500 light years away in the constellation Chamaeleon — appears to be undergoing a planet-forming process that could one day yield a solar system, said Kevin Luhman of Pennsylvania State University, who led the discovery. It's long been believed that our own solar system came into existence when a huge cloud of gas and dust collapsed to form the sun and planets about 4.5 billion years ago. The new finding is the smallest brown dwarf to be discovered with planet-forming properties. If the disk forms planets, the resulting solar system will be about 100 times smaller than our own, scientists said. Brown dwarfs, which are bigger than a planet but much smaller than a star, are thought to be balls of gas that failed to collect enough mass to start shining. The discovery was made using NASA's Spitzer Space Telescope and Hubble Space Telescope as well as ground observatories. Results will be published in the Dec. 10 issue of the Astrophysical Journal Letters.

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