News tagged with brown dwarfs

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The coolest stars

One way that stars are categorized is by temperature. Since the temperature of a star can determine its visual color, this category scheme is known as spectral type. The main categories of spectral type are ...

Sep 29, 2014
4.5 / 5 (13) 0

A strange lonely planet found without a star

(Phys.org) —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 ...

Oct 09, 2013
4.8 / 5 (96) 74 | with audio podcast

The closest star system found in a century

(Phys.org) —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 ...

Mar 11, 2013
4.7 / 5 (26) 16 | with audio podcast

Red skies discovered on extreme brown dwarf

(Phys.org) —A peculiar example of a celestial body, known as a brown dwarf, with unusually red skies has been discovered by a team of astronomers from the University of Hertfordshire's Centre for Astrophysics ...

Feb 06, 2014
4.8 / 5 (18) 1 | with audio podcast

First weather map of brown dwarf

ESO's Very Large Telescope has been used to create the first ever map of the weather on the surface of the nearest brown dwarf to Earth. An international team has made a chart of the dark and light features ...

Jan 29, 2014
4.8 / 5 (23) 6 | with audio podcast

WISE finds few brown dwarfs close to home

(Phys.org) -- Astronomers are getting to know the neighbors better. Our sun resides within a spiral arm of our Milky Way galaxy about two-thirds of the way out from the center. It lives in a fairly calm, suburb-like ...

Jun 08, 2012
4.6 / 5 (12) 3 | with audio podcast

Ultra-cool companion helps reveal giant planets

(Phys.org) -- An international team of astronomers led by David Pinfield of the University of Hertfordshire has found a brown dwarf that is more than 99% hydrogen and helium. Described as ultra-cool, it has ...

May 10, 2012
4.9 / 5 (7) 0 | with audio podcast

Astronomers find extreme weather on an alien world

(PhysOrg.com) -- A University of Toronto-led team of astronomers has observed extreme brightness changes on a nearby brown dwarf that may indicate a storm grander than any seen yet on a planet. Because old ...

Sep 12, 2011
4.7 / 5 (10) 3 | with audio podcast