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Latest Brown dwarf Stories

NASA's WISE Spacecraft Has Yet To Uncover Planet 'X' Beyond Pluto
2014-03-10 08:36:02

redOrbit Staff & Wire Reports - Your Universe Online While NASA’s Wide-Field Infrared Survey Explorer (WISE) has uncovered thousands of new stars during its multi-year mission, it has been unable to collect any evidence supporting the supposed existence of a large but unseen celestial body believed to be located somewhere beyond Pluto’s orbit. This supposed celestial body is commonly referred to as “Planet X” -- alternatively “Nemesis” or “Tyche." However, despite the...

2014-03-07 16:20:12

WASHINGTON, March 7, 2014 /PRNewswire-USNewswire/ -- After searching hundreds of millions of objects across our sky, NASA's Wide-Field Infrared Survey Explorer (WISE) has turned up no evidence of the hypothesized celestial body in our solar system commonly dubbed "Planet X." http://photos.prnewswire.com/prnvar/20081007/38461LOGO Researchers previously had theorized about the existence of this large, but unseen celestial body, suspected to lie somewhere beyond the orbit of Pluto. In...

Brown Dwarf Weather Map
2014-01-29 13:17:01

Lee Rannals for redOrbit.com - Your Universe Online Scientists using the Very Large Telescope (VLT) at the European Southern Observatory created the world’s first map of the weather on the surface of a brown dwarf. The international team developed a map featuring the dark and light features of WISE J104915.57-531906.1B, which is the nearest brown dwarf to Earth. This brown dwarf, informally known as Luhman 16B, is one of two recently discovered brown dwarfs only six light years away...

Currie Celestial Body_010914
2014-01-09 15:42:28

John P. Millis, PhD for redOrbit.com - Your Universe Online One of the more interesting questions in astronomy surrounds how solar system objects actually form. Astronomers are particularly concerned about the boundary between a planet and a star. When examining the objects in our own solar neighborhood, the question seems trivial – the Sun dominates the mass of our system, while even the largest planet, Jupiter, is dwarfed by comparison. In other parts of the galaxy, stars exist that...

Storms As Big As Jupiter's 'Great Red Spot' Found On Brown Dwarfs
2014-01-07 11:57:11

[ Watch the Video: Torrential Storm Clouds On Brown Dwarfs ] Lee Rannals for redOrbit.com - Your Universe Online Most brown dwarfs may contain storms as big as Jupiter’s “Great Red Spot,” according to findings presented at the American Astronomical Society in Washington. Brown dwarfs are a form of star, but lack the mass to fuse atoms continually to turn themselves into a full-fledged star. The celestial bodies are like a cross between a Jupiter-sized gas planet and a star....

Ancient Brown Dwarfs
2013-11-21 15:05:41

John P. Millis, PhD for redOrbit.com - Your Universe Online The galaxy is a diverse place, containing stars, planets, nebulous gas, black holes, and all matter of other objects, some of which we still do not understand. But among this vast array sits an object that is neither a star, nor a planet. These brown dwarfs have masses only a fraction of that of our Sun, but are still at least 13 times more massive than Jupiter. But because of the lack of substantial fusion, the surface of...

NASA Scientists Discover Cool Brown Dwarfs That Are Still Pretty Warm
2013-09-06 11:02:56

Brett Smith for redOrbit.com - Your Universe Online Two years ago NASA scientists revealed a new class of stars, dubbed ‘Y dwarfs,' thought to be about as warm as the human body. However, newly published research indicates that these cold stars are probably a bit warmer than the boiling point of water. These stars are believed to have a mass about 5 to 20 times that of Jupiter. Unlike our sun, these types of brown dwarf stars derive their energy via gravitational contraction, a...

Closest Star System In A Century Found 6.5 Light Years Away
2013-03-11 16:28:34

Brett Smith for redOrbit.com - Your Universe Online Using data obtained from a NASA satellite, a Pennsylvania State University astronomer has identified the closest solar system to be found within the past 97 years. According to astronomer Kevin Luhman´s report in the Astrophysical Journal Letters, the newly identified system is a pair of brown dwarf stars and the third-closest system to the Sun. “The distance to this brown dwarf pair is 6.5 light years -- so close that...

Gaia Mission To Detect Ultra-cool Dwarfs In The Milky Way
2013-02-14 05:47:05

April Flowers for redOrbit.com - Your Universe Online There are small subsets of stars among the hundred billion in the Milky Way called ultra-cool dwarfs, which have a temperature below 2500 Kelvin. Both ultra-cool dwarfs and brown dwarfs exist at these lower temperatures. The lower temperatures indicate that these are some of the most ancient objects in our Galaxy, leading scientists to examine them for information on primitive chemical composition. The Gaia mission, which will be...

Brown Dwarf Weather Map Shows A Stormy Atmosphere
2013-01-09 08:38:22

redOrbit Staff & Wire Reports - Your Universe Online By using the Hubble and Spitzer space telescopes, NASA officials say they have managed to complete the most detailed weather map to date for the cool, planet-like stars known as brown dwarfs. Brown dwarfs, which are also sometimes known as failed stars, form out of condensing gas but do not have the mass in order to fuse hydrogen atoms and produce energy, officials from the US space agency explained in a recent statement. As a...