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Latest Supernovae Stories

A New Atlas Of The Milky Way
2011-08-31 07:49:27

  Sino-German research group draws a new map at the Urumqi radio telescope and discovers two supernova remnants It may not be much use to hitchhikers through the galaxy, but it is extremely valuable to astronomers: the new radio atlas of the Milky Way. After almost ten years of work, researchers at the Max Planck Society and the Chinese Academy of Sciences have completed their investigation into the polarized radio emission in the galactic plane. The atlas is based on observations...

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2011-08-27 05:18:42

  A team of scientists has discovered a supernova closer to Earth than any of its kind in a generation. Astronomers believe the supernova they caught, which is about 21 million light years away from Earth, is just within hours of its explosion. Scientists around the world are scrambling to observe it with as many telescopes as possible, including the Hubble Space Telescope.  Andy Howell, adjunct professor of physics at University of California - Santa Barbara (UCSB) and...

2011-08-24 12:00:00

WASHINGTON, Aug. 24, 2011 /PRNewswire-USNewswire/ -- Two studies appearing in the Aug. 25 issue of the journal Nature provide new insights into a cosmic accident that has been streaming X-rays toward Earth since late March. NASA's Swift satellite first alerted astronomers to intense and unusual high-energy flares from the new source in the constellation Draco. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "Incredibly, this source is still producing X-rays and may remain...

2011-08-12 07:45:00

Type Ia supernovae are violent stellar explosions whose brightness is used to determine distances in the universe. Observing these objects to billions of light years away has led to the discovery that the universe is expanding at an accelerating rate, the foundation for the notion of dark energy. Although all Type Ia supernovae appear to be very similar, astronomers do not know for certain how the explosions take place and whether they all share the same origin. Now, a team of researchers has...

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2011-07-14 06:25:00

White dwarfs are the burned-out cores of stars like our Sun. Astronomers have discovered a pair of white dwarfs spiraling into one another at breakneck speeds. Today, these white dwarfs are so near they make a complete orbit in just 13 minutes, but they are gradually slipping closer together. About 900,000 years from now - a blink of an eye in astronomical time - they will merge and possibly explode as a supernova. By watching the stars converge, scientists will test both Einstein's general...

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2011-07-02 06:56:32

"Zombie" stars that explode like bombs as they die, only to revive by sucking matter out of other stars. According to an astrophysicist at UC Santa Barbara, this isn't the plot for the latest 3D blockbuster movie. Instead, it's something that happens every day in the universe "“"“ something that can be used to measure dark energy. This special category of stars, known as Type Ia supernovae, help to probe the mystery of dark energy, which scientists believe is related to the...

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2011-06-09 06:20:00

Astronomers announced on Wednesday a new class of supernova after observing six ultra-bright flashes of ancient exploding stars in deep space. The explosions, which were ten times brighter than any other previously seen supernova, may illuminate star-forming clouds in far-off, primitive galaxies, allowing scientists to observe stellar creation. The scientists directly observed four of these exploding stars, while another two previously unexplained supernovae are now believed to belong to this...

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2011-06-06 13:39:26

Exploding stars are the "factories" that produce all the heavy elements found, among other places, in our bodies. In this sense, we are all stardust. These exploding stars "“ supernovae "“ are highly energetic events that can occasionally light up the night sky. Such an explosion generally involves disruption in the balance between gravity "“ which pulls the star's material inward "“ and the thermonuclear reaction at the star's core "“ which heats it and pushes...

2011-05-25 07:37:00

WASHINGTON, LONDON and HONG KONG, May 25, 2011 /PRNewswire/ -- SuperNova Diagnostics®, Inc., a privately-held global diagnostics company for human and non-human health applications, today announced it has been selected to present at The Silicon Valley Association of Startup Entrepreneurs (SVASE) annual Launch: Silicon Valley 2011 at Microsoft's Mountain View, California campus on Tuesday, June 7, 2011 at 1:15 p.m. PDT. The presentation will include an overview of...

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2011-05-24 11:20:00

A local supernova factory has recently started production, according to a wealth of new data from NASA's Chandra X-ray Observatory on the Carina Nebula. This discovery may help astronomers better understand how some of the Galaxy's heaviest and youngest stars race through their lives and release newly-forged elements into their surroundings. Located in the Sagittarius-Carina arm of the Milky Way a mere 7,500 light years from Earth, the Carina Nebula has long been a favorite target for...


Latest Supernovae Reference Libraries

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2004-10-19 04:45:43

White Dwarf -- A white dwarf is a a star supported by electron degeneracy. A star like our Sun will become a white dwarf when it has exhausted its nuclear fuel. Near the end of its nuclear burning stage, such a star goes through a red giant phase and then expels most of its outer material (creating a planetary nebula) until only the hot (T > 100,000 K) core remains, which then settles down to become a young white dwarf. A typical white dwarf is half as massive as the Sun, yet only...

6_19859ff34fd03d00777232e2520ce83f5
2004-10-19 04:45:42

Supernova Remnant -- A supernova remnant (SNR) is made up of the materials left behind by the gigantic explosion of a star in a supernova. There are two possible routes to this end: either a massive star may cease to generate fusion energy in its core, and collapse inward under the force of its own gravity, or a white dwarf star may accumulate material from a companion star until it reaches a critical mass and undergoes a similar collapse. In either case, the resulting supernova...

6_79c799b9f03f60809a9d0aecf38491202
2004-10-19 04:45:42

Supernova -- A supernova is a star that increases its brightness drastically within a matter of days, making it appear as if a "new" star was born (hence "nova"). The "super" prefix distinguishes it from a mere nova, which also involves a star increasing in brightness, though to a lesser extent and through a much different mechanism. Astronomers have classified supernovae in several classes, according to the lines of different elements that appear in their spectra. The first...

6_dac4e7d6b8fb5cf3a1458d796b90d7a92
2004-10-19 04:45:42

Stellar Evolution -- Stellar evolution is the process of formation, life, and death of stars. It is one of the major topics of cosmogony. Star Birth and Life A star starts out as an enormous cloud of gas and dust many light-years across. Star formation begins when the cloud begins to condense under its own gravity. The processes that initiate this contraction are not fully understood. The cloud fragments fuse into stellar mass clouds known as protostars. Protostars do not emit...

6_19859ff34fd03d00777232e2520ce83f4
2004-10-19 04:45:42

Nova -- A nova is an enormous nuclear explosion caused by the accretion of hydrogen onto the surface of a white dwarf star. When a white dwarf has a close companion star, the companion will often begin to have its outer atmosphere drawn away from it by the white dwarf's gravity as the companion star ages and expands into a red giant. The gases so captured consist primarily of hydrogen and helium, the two principle constituents of matter in the universe. The gases are compacted on the...

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