Sun's Nemesis Pelted Earth with Comets, Study Suggests
Posted by Admin on August 12, 2011
http://www.space.com/8028-sun-nemesis-pelted-earth-comets-study-suggests.html
by Leslie Mullen, Astrobiology Magazine
Date: 11 March 2010 Time: 08:16 AM ET
NASA’s Wide-field Infrared Survey Explorer, or WISE, will uncover many “failed” stars, or brown dwarfs, in infrared light. This diagram shows a brown dwarf in relation to Earth, Jupiter, a low-mass star and the sun. CREDIT: NASA
A dark object may be lurking near our solar system, occasionally kicking comets in our direction.?
Nicknamed “Nemesis” or “The Death Star,” this undetected object could be a red or brown dwarf star, or an even darker presence several times the mass of Jupiter.
Why do scientists think something could be hidden beyond the edge of our solar system? Originally, Nemesis was suggested as a way to explain a cycle of mass extinctions on Earth.?
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