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 (15) 1

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

Stormy stars? Spitzer probes weather on brown dwarfs

(Phys.org) —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 ...

Jan 07, 2014
4.7 / 5 (11) 0 | with audio podcast

Nearby failed stars may harbor planet

(Phys.org) —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 ...

Dec 16, 2013
4.9 / 5 (15) 1 | with audio podcast

Drawing the line between stars and brown dwarfs

(Phys.org) —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 ...

Dec 10, 2013
4.5 / 5 (10) 0 | with audio podcast

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 (97) 74 | with audio podcast