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About 450 million years ago, when the Ordovician-Silurian extinction event took place, some 60 percent of all marine invertebrates died out. Researchers analyzing why the phenomenon took place now say that gamma-ray bursts from a nearby star may have had something to do with this.
Scientists agree that some of the E... |
9 January 2012
05:22 GMT |
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Recently, astronomers were surprised to detect a blast of highly-energetic light, originating in a peculiar portion of the Universe. After initial analysis, experts concluded that the explosion may have been produced by the most distant object ever detected in the Cosmos. The impressive gamma-ray burst (GRB) was sho... |
26 May 2011
02:28 GMT |
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Last week, astronomers observed a massive, extremely energetic explosion in space. They now say that it may have been produced just as a massive star was destroyed by a black hole, which will now grow even more because it will have more “feeding” material at its disposal.Experts are still surprised by the... |
8 April 2011
03:59 GMT |
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In a new study of an old gamma-ray burst (GRB), astronomers determined that the cosmic event struck our planet with the energy equivalent of more than half a million years of continuous sunlight. The event was so tremendously powerful that it caught us completely off-guard. Satellites in low-Earth orbit (LEO) and in... |
14 February 2011
09:42 GMT |
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A group of astrophysicists has just proposed a new mechanism for the formation of some gamma-ray bursts (GRB), which are among the most energetic phenomena in the entire Universe. The experts say that the reason some GRB last for a long time is because black holes are eating the stars emitting them.GRB are extraordin... |
26 January 2011
05:24 GMT |
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Following the biggest and most comprehensive study to date on gamma-ray bursts, experts have now made sense of the factors that make some of the most energetic events in the entire Universe to appear dim when seen in visible light wavelengths. When looking at this energetic light in the gamma-ray portion of the elect... |
16 December 2010
07:02 GMT |
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In a new series of studies, astrophysicists managed to determine what is left behind after the collapse of massive stars, which release most of their energy as gamma-ray bursts. GRB are the most violent explosions in the Universe, and apparently they can produce certain kinds of neutron stars.According to investigati... |
22 November 2010
08:56 GMT |
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At a recent conference, a team of researchers presented new discoveries showing that a special class of of neutron stars, called fast-spinning magnetars, is responsible for a large part of all gamma-ray bursts (GRB) that have been noticed in the Universe thus far. Experts knew that the structures are involved, but un... |
4 November 2010
03:49 GMT |
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A group of investigators believes it may have stumbled upon the most massive neutron stars ever discovered. The new body is about twice as heavy as the Sun, a fact that lends additional credence to theories saying that they are made up mostly of neutrons. Some theories have stated that the bodies could also be made o... |
28 October 2010
02:13 GMT |
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Over the past few years, the international scientific community has been fascinated with the possibility that events taking place millions of miles (thousands of light-years) away could influence our planet. While the idea seemed far-fetched at first, numerous studies have in the mean time begun corroborating the hyp... |
27 July 2010
04:48 GMT |
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Recently, the Japan Aerospace Exploration Agency (JAXA) announced that its prototype spacecraft, the Ikaros solar sail, managed to harness the energy of photons in order to move through space. This is the first time a working machine of this nature has been devised, and the eyes of the entire worlds turned to the inn... |
23 July 2010
03:30 GMT |
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Many people know that gamma-ray bursts (GRB) are the most intense and energetic explosions in the entire Universe, when amazing quantities of radiation are emitted and accelerated at nearly the speed of light. The Earth's atmosphere protects us from these cosmic events to some extent, but not many people know th... |
12 February 2010
14:01 GMT |
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In a recent discovery, experts have found a distant stellar explosion that did not behave in the manner expected from such a cosmic event. Namely, the supernova had some of the traits similar to a powerful gamma-ray burst (GRB), but was not exactly either of the two phenomena. Astrophysicists believe that future stud... |
28 January 2010
03:44 GMT |
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There are very few massive stars in the Universe, proportionately compared with the number of smaller ones. The former live short, troubled lives, burning up their fuel very fast – within several millions of years. When they reach the end of their burning cycle, they explode in huge blasts that are so intense, ... |
10 December 2009
18:01 GMT |
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Astronomers using the Very Energetic Radiation Imaging Telescope Array System (VERITAS), in Amado, Arizona, have recently announced that they discovered very high energy (VHE) gamma-ray emissions coming in from the starburst galaxy M82, also known as the Cigar Galaxy. According to the team, the radiations are very po... |
3 November 2009
02:52 GMT |
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NASA's Swift satellite is the first spacecraft to have spotted the first signs from the earliest known explosion in the entire Universe. The phenomenon is believed to have taken place about 13 billion years ago, when the Cosmos was just around 700 million years old. The star that exploded sent forth a massive am... |
29 October 2009
02:57 GMT |
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Gamma-ray Bursts (GRB) are arguably among the deadliest phenomena that can take place in the Universe. Believed to be generated in the dying throes of massive stars, these emissions exit the stars as jets of plasma, which then proceed to traveling billions of light-years in all directions. The high-energy particles t... |
19 September 2009
03:54 GMT |
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The NASA American space agency has recently identified, through its SWIFT satellite, the oldest-ever-detected gamma-ray burst (GRB) in the Universe, originating some 630 million years after the Big Bang. This means that the star that collapsed to generate the GRB ended its life cycle a good 370 million years before t... |
29 April 2009
03:22 GMT |
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SN 2008D, a supernova explosion detected by NASA's Swift X-ray Space Telescope inside the galaxy NGC 2770 on January 9, 2009, might have actually been triggered by the gravitational collapse of a massive star into a black hole, say researchers from the Max Planck Institute for Astrophysics, who claim that the ev... |
25 July 2008
06:51 GMT |
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The most powerful gamma-ray emission ever seen in the universe was detected yesterday by the Swift satellite, and originated from an area of space more than seven thousand times further away than the distance to the Andromeda galaxy. It was probably created by a massive star in the final stages of life that collapsed... |
20 March 2008
11:30 GMT |
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GRB's, or gamma-ray bursts, are the most powerful radiation emissions released during cosmic collisions between massive objects such as neutron stars or possibly black holes. Most of the gamma-ray bursts received from the interstellar medium usually present long period bursts, which are thought to be produced b... |
9 January 2008
05:22 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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