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 ...
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 ...
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 ...
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A new class of dim supernovae
Jun 05, 2009 |
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The colossal stellar explosions called supernovae come in many kinds and flavours. Some of them are produced when a massive star reaches the end of its life in a sudden gravitational collapse. Astronomers ...
1843 stellar eruption may be new type of star explosion
Sep 10, 2008 |
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Eta Carinae, the galaxy's biggest, brightest and perhaps most studied star after the sun, has been keeping a secret: Its giant outbursts appear to be driven by an entirely new type of stellar explosion that ...
Supernova Remnants Dance in the LMC
Jan 10, 2008 |
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The Gemini South Multi-Object Spectograph (GMOS) recently captured a dramatic image of a vast cloud complex named DEM L316 located in the Large Magellanic Cloud. The peanut-shaped nebula appears to be a single ...
Swift sees double supernova in galaxy
Jun 26, 2007 |
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In just the past six weeks, two supernovae have flared up in an obscure galaxy in the constellation Hercules. Never before have astronomers observed two of these powerful stellar explosions occurring in the ...
Simple Explanation for Mysterious Observations
Aug 18, 2009 |
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Recently, several astronomical experiments have revealed mysterious components of elementary particles. But up until now, the origin of electrons and positrons is unknown. Is dark matter the actual origin of this radiation, ...
Chandra Peers at Cosmic Super Bubbles
Aug 31, 2007 |
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Using the Chandra X-ray Observatory, astronomers explored a particular region of clouds and gas where stars are forming in one of the Milky Way's closest galactic neighbors.
X-rays provide a new way to investigate exploding stars
May 09, 2007 |
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ESA’s X-ray observatory XMM-Newton has revealed a new class of exploding stars – where the X-ray emission ‘lives fast and dies young’. The identification of this particular class of explosions gives astronomers ...
Stellar family portrait takes imaging technique to new extremes
Dec 03, 2009 |
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Noted for harbouring Eta Carinae -- one of the wildest and most massive stars in our galaxy -- the impressive Carina Nebula also houses a handful of massive clusters of young stars. The youngest of these stellar ...
Ultraviolet gives view inside real 'death star'
Jun 13, 2008 |
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Scientists have, for the first time, observed a flash of ultraviolet light from within a dying star giving vital evidence of how stars turn into supernovae.
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 ...
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