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Latest Brown dwarf Stories

2011-12-22 04:35:47

Low in the south in the summer sky shines the constellation Scorpius and the bright, red supergiant star Antares. Many of the brightest stars in Scorpius, and hundreds of its fainter stars, are among the youngest stars found near the earth, and a new analysis of them may result in a rethinking of both their ages and the ages of other groups of stars. New research by astrophysicists from the University of Rochester focused on stars in the north part of the constellation, known as Upper...

Image 1 - Planet-sized Object Is As Cool As The Earth
2011-10-20 06:45:36

The photo of a nearby star and its orbiting companion -- whose temperature is like a hot summer day in Arizona -- will be presented by Penn State Associate Professor of Astronomy and Astrophysics Kevin Luhman during the Signposts of Planets conference at NASA's Goddard Space Flight Center on 20 October 2011. A paper describing the discovery will be published in the Astrophysical Journal. "This planet-like companion is the coldest object ever directly photographed outside our solar system,"...

Extreme Weather Found On Alien World
2011-09-12 13:18:13

  Cosmic oddball may harbor a gigantic storm 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 brown dwarfs and giant planets have similar atmospheres, this finding could shed new light on weather phenomena of extra-solar planets. As part of a large survey of nearby brown dwarfs — objects that occupy the mass gap between dwarf stars and...

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2011-08-24 10:15:34

  Scientists at the California Institute of Technology (Caltech) have discovered that a dwarf planet at the edge of the solar system, dubbed 2007 OR10, is an icy world with about half its surface covered in water ice that once flowed from ancient, slush-producing volcanoes. The red-tinged planet, nicknamed Snow White, may also be covered in a thin layer of methane, the last remnant of an atmosphere slowly being dissipated into space, astronomers said. "You get to see this nice...

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2011-08-23 20:19:17

  Scientists using data from NASA's Wide-field Infrared Survey Explorer (WISE) have discovered the coldest class of star-like bodies, with temperatures as cool as the human body. Astronomers hunted these dark orbs, termed Y dwarfs, for more than a decade without success. When viewed with a visible-light telescope, they are nearly impossible to see. WISE's infrared vision allowed the telescope to finally spot the faint glow of six Y dwarfs relatively close to our sun, within a...

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2011-06-02 06:30:00

Ancient astronomers looked up at the dark skies in wonder, as the stars marched by overhead like precision dancers. In the early 17th century, Galileo Galilei brought the world one step closer to the heavens with his telescope, discovering, among other celestial marvels, moons around Jupiter, and our own moon's pockmarked surface. Nowadays, the stars are closer to us than ever, thanks to powerful telescopes in space and on the ground. Modern astronomers don't have to step outside, because...

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2011-03-31 07:20:00

Planet hunters have found hundreds of planets outside the solar system in the last decade, though it is unclear whether even one might be habitable. But it could be that the best place to look for planets that can support life is around dim, dying stars called white dwarfs. In a new paper published online Tuesday in The Astrophysical Journal Letters, Eric Agol, a University of Washington associate professor of astronomy, suggests that potentially habitable planets orbiting white dwarfs could...

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2011-03-23 10:00:00

Observations with the European Southern Observatory's Very Large Telescope, along with two other telescopes, have shown that there is a new candidate for the coldest known star: a brown dwarf in a double system with about the same temperature as a freshly made cup of tea "” hot in human terms, but extraordinarily cold for the surface of a star. This object is cool enough to begin crossing the blurred line dividing small cold stars from big hot planets. Brown dwarfs are essentially...

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2011-03-10 08:45:00

Cardiff University astronomers believe that a young star's long "napping" could trigger the formation of a second generation of smaller stars and planets orbiting around it. It has long been suspected that the buildup of material onto young stars is not continuous but happens in episodic events, resulting in short outbursts of energy from these stars. However, this has been largely ignored in models of star formation. Now, by developing advanced computer models to simulate the behavior of...


Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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