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Latest Supernovae Stories

Most Ancient Supernovas Are Already Discovered
2011-10-05 06:30:26

Ten-billion-year-old exploding stars were a source of Earth's iron, TAU researchers say Supernovas – stars in the process of exploding – open a window onto the history of the elements of Earth's periodic table as well as the history of the universe. All of those heavier than oxygen were formed in nuclear reactions that occurred during these explosions. The most ancient explosions, far enough away that their light is reaching us only now, can be difficult to spot. A project...

2011-09-14 06:46:47

High-performance networks speed data on explosion's early discovery A recent discovery by scientists at the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California, Berkeley, of a supernova within hours of its explosion was made possible by a specialized telescope, state-of-the-art computational tools — and the high-speed data transmissions network of UC San Diego's High-Performance Wireless and Research Education Network (HPWREN), as well as the...

Image 1 - Fermi Census Highlights Cosmic Mysteries
2011-09-11 04:32:43

  Every three hours, NASA's Fermi Gamma-ray Space Telescope scans the entire sky and deepens its portrait of the high-energy universe. Every year, the satellite's scientists reanalyze all of the data it has collected, exploiting updated analysis methods to tease out new sources. These relatively steady sources are in addition to the numerous transient events Fermi detects, such as gamma-ray bursts in the distant universe and flares from the sun. Earlier this year, the Fermi team...

Image 1 - Supernova Reaching Its Peak Brightness Thursday And Friday
2011-09-08 13:19:14

Astronomers will be losing sleep as they wait on a newly discovered supernova to reach its peak in brightness on Thursday and Friday. The exploding star is about 21 million light years away and was first spotted by telescopes August 23. It is the closest of its kind to be seen in four decades and is located in the "Pinwheel Galaxy" above the Big Dipper. Amateur star-gazers could even equip themselves with 20x80 binoculars to help see the exploding star. Astronomers say that the...

White Dwarfs May Need To Slow Down Before Going Supernova
2011-09-07 04:24:24

  Older stars may have to slow down their rotations before exploding as supernovae, according to a new study published earlier this month by scientists at the Harvard-Smithsonian Center for Astrophysics (CfA). In a September 6 press release, the researchers compare the phenomenon to "Speed," a motion picture whose plot revolves around a bus that will explode if it travels too slowly. According to their findings, which have been published in The Astrophysical Journal Letters, the...

2011-09-06 20:35:00

TelescopeKing.com - According to sciencenews.org, on August 24, 2011, astronomers discovered a supernova in progress located in the M101 galaxy. This discovery was unique because the supernova was in its early stages and had been estimated to have begun a mere 12 hours earlier. Secondly, the supernova is very close to earth, relatively speaking. It was predicted that the peak of the explosion would occur in early September, and that prediction seems to be very accurate as the...

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...

space-082711-002a
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...

2011-08-12 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...


Latest Supernovae Reference Libraries

6_c21be0ecb1b565a9be109a383c38223f2
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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Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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