NASA's Spitzer Finds Failed Stars May Succeed in Planet Business
10.20.05
NASA's Spitzer Space Telescope has spotted the very beginnings of what might become planets around the puniest of celestial orbs - brown dwarfs, or "failed stars."
Image right: This artist's concept shows microscopic crystals in the dusty disk surrounding a brown dwarf, or "failed star." The crystals, made up of a green mineral found on Earth called olivine, are thought to help seed the formation of planets.
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The telescope's infrared eyes have for the first time detected clumps of microscopic dust grains and tiny crystals orbiting five brown dwarfs. These clumps and crystals are thought to collide and further lump together to eventually make planets. Similar materials are seen in planet-forming regions around stars and in comets, the remnants of our own solar system's construction.
The findings provide evidence that brown dwarfs, despite being colder and dimmer......
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