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View Full Version : Cometary Dust Around a Dead Star



Fraser
2006-Jan-12, 04:33 AM
SUMMARY: NASA's Spitzer Space Telescope has spotted a ring of cometary debris surrounding white dwarf star G29-38. Using its infrared vision, Spitzer was able to pick out the characteristic signature of small, dirty silicate grains, which are probably from comets. G29-38 probably consumed its planets 500 million years ago when it expended into a red giant, but the comets were out of its reach.

View full article (http://www.universetoday.com/am/publish/cometary_dust_dead_star.html)
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