News tagged with stellar explosions
Variability of type 1a supernovae has implications for dark energy studies
Aug 12, 2009 |
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(PhysOrg.com) -- The stellar explosions known as type 1a supernovae have long been used as "standard candles," their uniform brightness giving astronomers a way to measure cosmic distances and the expansion ...
Understanding stellar explosions is less straightforward than previously thought
Apr 30, 2009 |
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(PhysOrg.com) -- Stellar explosions called novæ are caused by nuclear reactions between the star's atoms. In order to better understand such violent phenomena, astrophysicists study the radiation emitted by certain types ...
Star Light, Star Bright, Its Explanation is Out of Sight
Jan 06, 2009 |
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(PhysOrg.com) -- A mysterious flash of light from somewhere near or far in the universe is still keeping astronomers in the dark long after it was first detected by NASA's Hubble Space Telescope in 2006. It ...
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Two Earth-sized bodies with oxygen rich atmospheres found -- but they're stars not planets
Nov 12, 2009 |
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(PhysOrg.com) -- Astrophysicists at the University of Warwick and Kiel University have discovered two earth sized bodies with oxygen rich atmospheres - however there is a bit of a disappointing snag for anyone ...
A faraway planet intrigues: Exoplanet with extremely tilted orbit raises new interest in stellar astronomy
Nov 12, 2009 |
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(PhysOrg.com) -- Two teams of astronomers have found a planet outside the solar system that might be orbiting backwards compared to its star's rotation, a discovery that could shed light on how unique the ...
Seeing stars, Proba-2 platform passes its first health check
Space & Earth / Space Exploration
Nov 11, 2009 |
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(PhysOrg.com) -- Into its second week in orbit, Proba-2's spacecraft platform has proven to be in excellent health. This leaves the way clear for commissioning the many new technology payloads aboard the mini-satellite, ...
Rapid star formation spotted in 'stellar nurseries' of infant galaxies
Nov 11, 2009 |
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The Universe's infant galaxies enjoyed rapid growth spurts forming stars like our sun at a rate of up to 50 stars a year, according to scientists at Durham University.
NASA's Great Observatories Celebrate International Year of Astronomy
Nov 10, 2009 |
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(PhysOrg.com) -- A never-before-seen view of the turbulent heart of our Milky Way galaxy is being unveiled by NASA on Nov. 10. This event will commemorate the 400 years since Galileo first turned his telescope ...
Swift, XMM-Newton satellites tune into a middleweight black hole
Nov 10, 2009 |
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(PhysOrg.com) -- While astronomers have studied lightweight and heavyweight black holes for decades, the evidence for black holes with intermediate masses has been much harder to come by. Now, astronomers ...
Planetary Society plans new 'solar sail'
Space & Earth / Space Exploration
Nov 09, 2009 |
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(AP) -- Four years after its first solar sail ended up in the ocean instead of orbit, The Planetary Society announced Monday that by the end of 2010 it will try again to launch a spacecraft that will be propelled by the ...
Scanning invisible damage of PTSD, brain blasts
Nov 09, 2009 |
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(AP) -- Powerful scans are letting doctors watch just how the brain changes in veterans with post-traumatic stress disorder and concussion-like brain injuries - signature damage of the Iraq and Afghanistan wars.
Sea lions killed, but Columbia salmon toll rises
Nov 07, 2009 |
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(AP) -- Killing or removing 25 California sea lions over the past two years has not reduced the toll on salmon at the base of Bonneville Dam in the Columbia River.
In a Galaxy Far, Far Away...
Nov 06, 2009 |
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(PhysOrg.com) -- Astronomers have published the discovery of the farthest known object in the cosmos: a star that exploded when the universe was only 630 million years old -- only 4.6% of its current age. ...
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