News tagged with brown dwarfs

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Stormy stars? Spitzer probes weather on brown dwarfs

( —Swirling, stormy clouds may be ever-present on cool celestial orbs called brown dwarfs. New observations from NASA's Spitzer Space Telescope suggest that most brown dwarfs are roiling with one or more planet-size ...

dateJan 07, 2014 in Astronomy
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Nearby failed stars may harbor planet

( —Astronomers, including Carnegie's Yuri Beletsky, took precise measurements of the closest pair of failed stars to the Sun, which suggest that the system harbors a third, planetary-mass object.The research is ...

dateDec 16, 2013 in Astronomy
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Drawing the line between stars and brown dwarfs

( —Stars come in a tremendous size range, from many tens of times bigger than the Sun to a tiny fraction of its size. But the answer to just how small an astronomical body can be, and still be a star, has never ...

dateDec 10, 2013 in Astronomy
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The galaxy's ancient brown dwarf population revealed

( —A team of astronomers led by Dr David Pinfield at the University of Hertfordshire have discovered two of the oldest brown dwarfs in the Galaxy. These ancient objects are moving at speeds of 100-200 kilometres ...

dateNov 20, 2013 in Astronomy
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A strange lonely planet found without a star

( —An international team of astronomers has discovered an exotic young planet that is not orbiting a star. This free-floating planet, dubbed PSO J318.5-22, is just 80 light-years away from Earth and has a mass ...

dateOct 09, 2013 in Astronomy
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Brown dwarf companion stars

( —Astronomers trying to understand how the Sun and Earth formed, and why they have their characteristic properties, have made progress on a closely related problem: the nature of the lowest mass stars, so-called ...

dateSep 02, 2013 in Astronomy
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The closest star system found in a century

( —A pair of newly discovered stars is the third-closest star system to the Sun, according to a paper that will be published in Astrophysical Journal Letters. The duo is the closest star system discovered since ...

dateMar 11, 2013 in Astronomy
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Can life emerge on planets around cooling stars?

(—Astronomers find planets in strange places and wonder if they might support life. One such place would be in orbit around a white or brown dwarf. While neither is a star like the sun, both glow and so could be ...

dateNov 20, 2012 in Astronomy
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