News tagged with giant stars
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 |
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Swift narrows down origin of important supernova class
(PhysOrg.com) -- Studies using X-ray and ultraviolet observations from NASA's Swift satellite provide new insights into the elusive origins of an important class of exploding star called Type Ia supernovae. ...
Mar 20, 2012 |
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Some orbits more popular than others in solar systems
(PhysOrg.com) -- In young solar systems emerging around baby stars, some orbits are more popular than others, resulting in “planet pile-ups” and “planet deserts."
Mar 19, 2012 |
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New class of planetary systems: Astronomers find two new planets orbiting double suns
Using data from NASA’s Kepler Mission, astronomers announced the discovery of two new transiting “circumbinary” planet systems -- planets that orbit two stars. This work establishes that such ...
Jan 11, 2012 |
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Can Earth-sized planets survive their star's expansion?
Two Earth-sized planets have been discovered circling a dying star that has passed the red giant stage. Because of their close orbits, the planets must have been engulfed by their star while it swelled up ...
Dec 21, 2011 |
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Blue stragglers: Astronomers discover how mysterious stars stay so young
(PhysOrg.com) -- Mysterious "blue stragglers" are old stars that appear younger than they should be: they burn hot and blue. Several theories have attempted to explain why they don't show their age, but, until ...
Oct 19, 2011 |
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Alien world is blacker than coal
(PhysOrg.com) -- Astronomers have discovered the darkest known exoplanet - a distant, Jupiter-sized gas giant known as TrES-2b. Their measurements show that TrES-2b reflects less than one percent of the sunlight ...
Aug 11, 2011 |
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Kepler spacecraft gives astronomers a look inside red giant stars
NASA's Kepler Mission is giving astronomers such a clear view of changes in star brightness that they can now see clues about what's happening inside red giant stars.
Mar 30, 2011 |
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The universe's most massive stars can form in near isolation, new study finds
(PhysOrg.com) -- New observations by University of Michigan astronomers add weight to the theory that the most massive stars in the universe could form essentially anywhere, including in near isolation; they ...
Dec 21, 2010 |
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Chandra finds evidence for stellar cannibalism
Evidence that a star has recently engulfed a companion star or a giant planet has been found using NASA's Chandra X-ray Observatory. The likely existence of such a "cannibal" star provides new insight into ...
Sep 14, 2010 |
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Astronomers Find Planets in Unusually Intimate Dance around Dying Star
Hundreds of extrasolar planets have been found over the past decade and a half, most of them solitary worlds orbiting their parent star in seeming isolation. With further observation, however, one in three ...
Jul 29, 2010 |
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Recipes for Renegade Planets
Recent discoveries of gas giant planets in unusual orbits challenge the generally accepted theory of planet formation. While these discoveries do not disprove the theory, they have opened our eyes to chaotic ...
Jul 08, 2010 |
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Exoplanet caught on the move (w/ Video)
(PhysOrg.com) -- Only 12 million years old, or less than three-thousandths of the age of the Sun, Beta Pictoris is 75% more massive than our parent star. It is located about 60 light-years away towards the ...
Jun 10, 2010 |
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Seeing the Closest Aliens Will Take Centuries
As telescopes become more advanced, we’ll be able to see more details about planets orbiting other stars - including indications that those planets have life. However, it would probably take many centuries ...
Space & Earth / Space Exploration
Apr 29, 2010 |
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Scientists capture 'terrifying' Tolkien-like eclipse (w/ Video)
(PhysOrg.com) -- Scientists have captured a 'terrifying' image of a giant Goliath-like star undergoing a two year eclipse. First discovered by a German astronomer 180 years ago, it is the first close-up image of an eclipse ...
Apr 07, 2010 |
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