Tuesday, March 12, 2013

Astronomer Locates Previously Unseen Neighbor to the Sun

http://blogs.scientificamerican.com/observations/2013/03/11/astronomer-locates-previously-unseen-neighbor-to-the-sun/

March 11, 2013 - Scientific American
When NASA launched the WISE satellite in 2009, astronomers hoped it would be able to spot loads of cool, dim objects known as brown dwarfs. Bigger than a planet, a brown dwarf is not quite a star, either—it is too small to sustain the nuclear fusion reactions that turn hydrogen to helium. But it may burn to some degree, using a heavy isotope of hydrogen called deuterium as fusion fuel.
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Astronomers discover third-closest star system

http://www.usatoday.com/story/tech/sciencefair/2013/03/11/third-closest-stars/1978453/

March 11, 2013 - USA Today
NASA space telescope data has revealed the third-closest star system yet spotted, astronomers report, a pair of dim "brown dwarf" stars.
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Surprisingly Close Star System Discovered

http://newswatch.nationalgeographic.com/2013/03/12/surprisingly-close-star-system-discovered/

March 11, 2013 - National Geographic
Looks like astronomers may have new hunting grounds to search for exoplanets , and it’s  close–  in fact it’s just in our local interstellar neighborhood.  A new-found star system at only 6.5 light years away now ranks as the third nearest to our solar system and the closest to be discovered since 1917.
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Astronomer locates previously unseen neighbor to the Sun

http://www.nature.com/news/astronomer-locates-previously-unseen-neighbor-to-the-sun-1.12592

March 11, 2013 - Nature.com
When NASA launched the WISE satellite in 2009, astronomers hoped it would be able to spot loads of cool, dim objects known as brown dwarfs. Bigger than a planet, a brown dwarf is not quite a star, either—it is too small to sustain the nuclear fusion reactions that turn hydrogen to helium. But it may burn to some degree, using a heavy isotope of hydrogen called deuterium as fusion fuel.
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