Quantcast

Latest Brown dwarfs Stories

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....

Brown Dwarf Binary System May Include A Hidden Planet
2013-12-17 04:15:33

redOrbit Staff & Wire Reports - Your Universe Online Analysis of the two brown dwarfs located closest to the sun suggests that there could actually be a third, previously undetected planetary-mass object, according to research published as a letter to the editor in the journal Astronomy & Astrophysics. Brown dwarfs, which are failed stars that have a mass of less than 8 percent the mass of the sun, are not massive enough to burn hydrogen in their centers. The system at the...

Where Brown Dwarfs End And Stars Begin
2013-12-15 04:37:49

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online Stars form as interstellar gas accumulates, increasing in density and temperature. Eventually, the environment at the core of the object reaches a state where hydrogen begins fusing at a high enough rate that the outward radiation pressure and the inward gravitational force reach a balance, and a star is born. However, if the forming proto-star is not quite massive enough, the fusion process is not able to produce enough...

Sunless Planet Found Wandering In Galaxy
2013-10-10 10:04:16

Brett Smith for redOrbit.com - Your Universe Online While most of the planets seen outside our solar system have been observed orbiting a distant star, one of the most recently discovered exoplanets found was seen wandering the depths of space without the warming comfort of a nearby sun. The newly discovered planet PSO J318.5-22 is 80 light-years from Earth and has a mass about six times that of Jupiter. According to a study in Astrophysical Journal Letters that described the discovery,...

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...

$4 Million Adaptive Optics Fund Completed By Keck Observatory
2013-03-05 12:21:50

W. M. Keck Observatory The W. M. Keck Observatory has successfully completed a $4 million campaign that will give astronomers the most detailed Adaptive Optics images of the cosmos ever created by mankind. Furthermore, the campaign was funded entirely by private philanthropy. The Gordon and Betty Moore Foundation, the W. M. Keck Foundation and The Bob & Renee Parsons Foundation awarded three grants totaling $3.7 million to significantly upgrade the Keck II Laser Guide Star Adaptive...

Free-Floating Planet Identified By Astronomers
2012-11-14 06:50:44

[ Watch the Video: Artists Impression of Free-Floating Planet ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers have identified a body that is most likely a planet wandering throughout space without a parent star. The free-floating planet candidate is the closet such object to the Solar System observed so far, lying at a distance of about 100 light-years away. Astronomers using the European Space Observatory's Very Large Telescope (VLT) and the Canada-France-Hawaii...

Image 1 - Astronomers Discover Radio Waves From Brown Dwarf
2012-04-30 12:49:53

Penn State University astronomers have discovered record-breaking radio waves from an ultra-cool star that is not much warmer than the planet Jupiter. The team used a giant 1,000-feet radio telescope at Arecibo, Puerto Rica to look for radio signals from a class of objects known as brown dwarfs.  Brown dwarf's bridge the gap between gas giant planets, and hydrogen-fusing stars. The astronomers found that a brown dwarf named J1047+21 that lies 33.6 light years away in the...

Image 1 - Bounty Of Failed Stars Found By Astronomers
2011-10-12 03:46:58

A University of Toronto-led team of astronomers has discovered over two dozen new free-floating brown dwarfs, including a lightweight youngster only about six times heftier than Jupiter, that reside in two young star clusters. What's more, one cluster contains a surprising surplus of them, harboring half as many of these astronomical oddballs as normal stars. "Our findings suggest once again that objects not much bigger than Jupiter could form the same way as stars do. In other words,...


Latest Brown dwarfs Reference Libraries

3_aaa6f0d4aeab03d9ae4d6b2e552621d02
2004-10-19 04:45:40

Brown Dwarf -- Brown dwarfs are a special type of low-mass star (approximately 13-70 Jupiter masses) that do not have nuclear fusion occurring in their cores during their time on the main sequence. Early in their development most brown dwarf stars do have lithium fusion in their cores, and a lack of lithium is a test for low-mass objects that are suspected of being brown dwarfs. Many brown dwarfs continue to glow in the red and infrared after their lithium is exhausted. This glow is...

More Articles (1 articles) »
Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
Related