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Home / News / Tags / supernova
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A massive star, burning brighter than our Star, eventually depletes its helium in the core, and without any source of heat to balance the gravity, the core collapses until it reaches nuclear densities. This produces a supernova explosion.For the first time, astronomers discovered a star that seems to have died twice... |
14 June 2007
16:56 GMT |
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The Crab Nebula has been a real puzzle for astronomers for the past century, since the measured age didn't correspond to historical accounts. Now, a team of scientists recalculated its explosion date and finally solved the longstanding riddle.It is a supernova remnant in the constellation of Taurus, first obser... |
1 June 2007
10:44 GMT |
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Astronomers were able to observe for the first time the properties of a giant binary system consisting of the most massive and luminous types of stars in the Universe. Called LH54-425, the pair of stars orbiting each other is located in the Large Magellanic Cloud, a satellite galaxy of our Milky Way.The Large Magell... |
29 May 2007
15:26 GMT |
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A team of astronomers discovered this year the first known triple quasar, a space oddity, since the statistical probability of the existence of such a quasar says it's an extremely rare association.Quasars are extremely bright and distant astronomical objects thought to be the active nuclei of young galaxies. M... |
28 May 2007
16:36 GMT |
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Most astronomers believe that our solar system formed from the gravitational collapse of a giant molecular cloud, which was likely several light-years across and probably birthed several stars. But a new find contradicts that nebular hypothesis, saying it wasn't a black hole that gave birth to the Sun and the p... |
25 May 2007
06:53 GMT |
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Mysterious observations of variable stars have recently been made by astronomers. The unusual thing about these stars is the fact that they change in brightness, increasing and then rapidly decreasing it. They think there may be a new category of stars, whose brightening events are dimmer than the cataclysmic explos... |
24 May 2007
08:14 GMT |
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Astronomers have just detected the brightest explosion of a star ever recorded, a huge new breed of supernova more than 100 times bigger than any one observed so far.The violent blast was photographed by both terrestrial telescopes and NASA's orbiting Chandra X-Ray Observatory in a galaxy far from our own Milky... |
8 May 2007
02:39 GMT |
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From time to time, a huge explosion followed by a bright flash of light can be observed in space. It's a colossal gamma-ray burst (GRB), emitting for a few seconds as much radiation as a million galaxies.They are the most luminous events known in the universe since the Big Bang. They are flashes of gamma rays,... |
1 May 2007
16:31 GMT |
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It is the general belief of astronomers that planets are created in flat disks of gas and dust, called protoplanetary disks, which swirl around young, cool stars, and are slowly drawn together by a forming gravitation nucleus. According to standard planet-formation theory, over millions of years the particles clump ... |
19 April 2007
03:00 GMT |
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Telescope imaging confirms what astronomers have theorized based on computer simulations. Dr Chris Wareing an his colleagues, based at Jodrell Bank Observatory, UK, have found evidence that giant whirlpools form in the wake of stars as they move through clouds in interstellar space.Initially, Dr Wareing and his coll... |
18 April 2007
03:00 GMT |
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A neutron star is one of the few possible endpoints of stellar evolution. A neutron star is formed from the collapsed remnant of a massive star after a supernova, and has a mass between 1.35 to about 2.1 solar masses, with a corresponding radius between 20 and 10 km (they shrink as their mass increases), 30 000 to 7... |
14 April 2007
06:58 GMT |
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In nature, symmetry is the sign of beauty. Even humans find symmetrical faces to be the most beautiful. If this were to be applied to stars, then astronomers may have found the newest supermodel of the skies.Named Red Square (no connection with the famous Moscow central square), the bipolar nebula is the most symmet... |
13 April 2007
04:45 GMT |
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The earliest recorded supernova, SN 185, was viewed by Chinese astronomers in 185 AD. Modern day scientists think they have pretty much figured its formation mechanisms.But recently-observed supernova is making some astrophysicists doubt prevailing theories for how stars die. The massive star, located in galaxy UGC ... |
6 April 2007
05:43 GMT |
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A white dwarf is what stars like our Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, such a star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains. This core becomes a very hot (T > 100,000K) young white dwarf, wh... |
28 March 2007
02:45 GMT |
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A giant comes to its end in a massive display of radiation. The star quake expels much of all of the star's material at a velocity up to a tenth of the speed of light, driving a shock wave into the surrounding interstellar gas and the afterglow turns into the main attraction of the constellation due to the fact ... |
10 March 2007
08:30 GMT |
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Eagle Nebula, also known as the Pillars of Creation, a young open cluster of stars, is like a stellar womb where astronomers have spotted a stellar embryo that could grow into a twin of our Sun. This baby star would be the earliest stage in a star's development ever detected. Hidden in a nodule of the left pill... |
6 March 2007
04:10 GMT |
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