Astronomical fireworks: On the origins of Type Ia supernova
(PhysOrg.com) -- A little luck and a lot of hard work can really light up the sky.
Astronomy
Feb 28, 2012
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Page 17 - News tagged with type ia supernova
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white dwarfs
Hubble breaks new ground with discovery of distant exploding star
NASA's Hubble Space Telescope has looked deep into the distant universe and detected the feeble glow of a star that exploded more than 9 billion years ago. The sighting is the first finding of an ambitious survey that will ...
Astronomy
Jan 11, 2012
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Origin of thermonuclear supernova discovered
(PhysOrg.com) -- Using NASA’s Hubble Space Telescope, astronomers have solved a longstanding mystery on the type of star, or so-called progenitor, which caused a supernova seen in a nearby galaxy. The finding yields ...
Astronomy
Jan 11, 2012
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Earliest-yet observation of August SN2011fe supernova nails it: Destroyed star was white dwarf
Last year's discovery of the nearest Type Ia supernova in decades – captured only 11 hours after it exploded – allowed astronomers to finally cinch the identity of the stars behind these explosions, which have become ...
Astronomy
Jan 11, 2012
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Closest Type Ia supernova in decades solves a cosmic mystery
Type Ia supernovae (SN Ia's) are the extraordinarily bright and remarkably similar "standard candles" astronomers use to measure cosmic growth, a technique that in 1998 led to the discovery of dark energy – and 13 years ...
Astronomy
Dec 14, 2011
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G299.2-2.9, a middle-aged supernova remnant
(PhysOrg.com) -- G299.2-2.9 is an intriguing supernova remnant found about 16,000 light years away in the Milky Way galaxy. Evidence points to G299.2-2.9 being the remains of a Type Ia supernova, where a white dwarf has grown ...
Astronomy
Oct 13, 2011
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Our galaxy might hold thousands of ticking 'time bombs'
(PhysOrg.com) -- In the Hollywood blockbuster "Speed," a bomb on a bus is rigged to blow up if the bus slows down below 50 miles per hour. The premise - slow down and you explode - makes for a great action movie plot, and ...
Astronomy
Sep 6, 2011
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Are stellar explosions created equal?
Cosmic distances are difficult to grasp and no less difficult to measure. When it comes to other galaxies or even remote parts of our own Milky Way, distance measurements are nothing but assessments, derived from indirect ...
Astronomy
Aug 22, 2011
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Tycho's supernova remnant: New evidence on origin of supernovas found
(PhysOrg.com) -- Astronomers may now know the cause of an historic supernova explosion that is an important type of object for investigating dark energy in the universe. The discovery, made using NASA's Chandra X-ray Observatory, ...
Astronomy
Apr 26, 2011
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The best way to measure dark energy just got better
(PhysOrg.com) -- Dark energy is a mysterious force that pervades all space, acting as a "push" to accelerate the Universe's expansion. Despite being 70 percent of the Universe, dark energy was only discovered in 1998 by two ...
Astronomy
Jan 13, 2011
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