News tagged with red giants
Vampires and collisions rejuvenate stars
Stars in globular clusters are generally extremely old, with ages of 12-13 billion years. However, a small fraction of them appear to be significantly younger than the average population and, because they ...
Dec 23, 2009 |
4.3 / 5 (9) |
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A New Method of Estimating Stellar Distances
(PhysOrg.com) -- The star Chi Cygni is located about 550 light-years away, in the direction of the constellation of Cygnus the Swan. It is a notable star because, unlike the sun which still burns hydrogen ...
Dec 21, 2009 |
4.4 / 5 (15) |
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Giant Planet Set for a Cataclysmic Show
(PhysOrg.com) -- A team of Chinese astronomers have discovered a giant planet close to the exotic binary star system QS Virginis. Although dormant now, in the future the two stars will one day erupt in a violent ...
Dec 16, 2009 |
4.9 / 5 (16) |
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Brightness variations of sun-like stars: The mystery deepens
(PhysOrg.com) -- An extensive study made with ESO's Very Large Telescope deepens a long-standing mystery in the study of stars similar to the Sun. Unusual year-long variations in the brightness of about one ...
Dec 07, 2009 |
4.4 / 5 (14) |
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The Ring Nebula
The diversity of colours, shapes, and sizes of planetary nebulae make them fascinating objects. In this photo release Calar Alto presents a rather unique view combining both optical and near-infrared data ...
Nov 02, 2009 |
4.3 / 5 (7) |
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Largest collection of anomalous white dwarfs observed by Hubble
Twenty-four unusual stars, 18 of them newly discovered, have been observed in new Hubble telescope images. The stars are white dwarfs, a common type of dead star, but they are odd because they are made of ...
Apr 23, 2009 |
4.7 / 5 (6) |
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Guide to galaxy for Earth Hour's starry, starry night
(PhysOrg.com) -- When cities turn off their lights for Earth Hour their occupants will get more than a warm and fuzzy green feeling, they will also see stars hundreds of trillions kilometres away lighting up a moonless night ...
Space & Earth / Space Exploration
Mar 18, 2009 |
4.9 / 5 (7) |
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Astronomers spot cosmic dust fountain
(PhysOrg.com) -- Space dust annoys astronomers just as much as the household variety when it interferes with their observations of distant stars. And yet space dust also poses one of the great mysteries of ...
Feb 05, 2009 |
4.6 / 5 (13) |
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