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Home > News > Tags > gamma-rays
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Stories about: gamma-rays |
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Scientists at the American space agency are currently getting ready to perform a new series of radiation tests on a group of squirrel monkeys. The study will attempt to determine the possible effects that prolonged radiation exposure may have on astronauts during long-duration spaceflight to other planets, such as to... |
12 November 2009
19:01 GMT |
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The Fermi Gamma-ray Space Telescope is one of the American space agency's best observatories, especially suited to discovering gamma-ray bursts coming towards our planet from the distant Universe. However, in its first 14 months of operations, the machine was able to record some peculiar signals coming in from t... |
9 November 2009
04:43 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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When it comes to explaining the world around us, there are two ways you can go about it. You can either explain how large bodies interact, as in everything from apples and humans to planets and galaxies, or determine the behavior of extremely small, elementary particles, such as photons and electrons. General relativ... |
29 October 2009
02:42 GMT |
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Examining the properties of black holes is not precisely the easiest thing in the world to do. In fact, one may argue that it's pretty difficult, considering that there is no way of probing them directly. They would engulf any spacecraft we send in their vicinity, and they also bend and swallow light, which mean... |
20 October 2009
03:56 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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A team of international researchers, working in collaboration with experts from the Naval Research Laboratory (NRL) Space Science Division have recently announced that the Fermi telescope managed to identify 16 new, bright sources of gamma-rays, in 16 pulsating neutron stars. For the discovery, blind frequency search... |
10 September 2009
10:41 GMT |
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For a few decades, those believing that the chances for life elsewhere in the Universe are small have made circulate a theory that backs up their claims, known as the anthropic argument. Essentially, it states that the period of time it takes life to evolve is longer than the period in a star's life when it can ... |
13 August 2009
21:01 GMT |
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The Fermi telescope has recently brought a new ray of hope into the search of dark matter, as new observation results coincided directly with previous analyses of the elusive stuff. Last year, the observatory combined its data with that obtained by the PAMELA (Payload for Antimatter Matter Exploration and Light-nucle... |
27 July 2009
03:12 GMT |
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The Fermi Gamma-ray Space Telescope is, undoubtedly, the most sophisticated observatory of its class in orbit today. But this title was not obtained because someone decided to call it so, but because of the revolutionary knowledge about the Universe that it brought to the world. With its highly sensitive instruments,... |
21 July 2009
15:31 GMT |
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Many astronomers have speculated that the peculiar distribution of certain forms of gamma-rays in our galaxy, the Milky Way, may be evidence to support the presence of some form of undetectable “dark matter,” which influences its spread patterns. But these theories are disproved by two new scientific pape... |
10 July 2009
11:01 GMT |
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The exact mechanisms behind pulsars' emission have puzzled astronomers for quite some time, especially given the fact that they observed unidentified gamma-ray sources during their studies, and could not tell for sure what they were, or what was causing them. In a new study, conducted by researchers at the Unive... |
3 July 2009
05:22 GMT |
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In one of the largest astronomical collaborations to date, 390 scientists and four telescope arrays contributed to analyzing the very-high-energy (VHE) gamma radiation coming in from the highly active radio galaxy Messier 87, or M87. The bursts were accompanied by a strong rise of the radio flux, which the extensive ... |
3 July 2009
02:44 GMT |
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Gamma-rays are the most energetic form of radiation in the Universe, and they have the potential to considerably light up the sky, if you know where to look for them. However, it's impossible to see them with conventional observatories. If traced with a gamma-ray telescope, they can show galactic and stellar pro... |
9 June 2009
02:09 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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The quest for life in other parts of the Universe has to start with finding the right star, experts say, referring to the fact that exoplanets need to have an “indulgent neighbor,” if they are to stand any chance of developing an atmosphere, and maybe even liquid water. That is to say, they have to be wit... |
10 April 2009
02:28 GMT |
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Stellar explosion are cosmic events of unimaginable magnitude. Seen from light-years away, they look amazing, with streams of particles being emitted everywhere around, and with remnants coloring the darkness of space. But close-by, the effects of the blast aren't nearly as pleasant, as everything around the dyi... |
4 April 2009
04:00 GMT |
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The American space agency's Fermi gamma-ray telescope has only recently finished collecting over three months' worth of cosmological observations, with which astrophysicists and other scientists have put together the most detailed and extensive map of the Universe in existence today, at least as far as radi... |
12 March 2009
10:11 GMT |
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The 3C 66A and 3C 66B distant galaxies seem to be harboring a very potent source of gamma-rays, an international team of scientists has recently announced, after a high-energy gamma-ray burst (GRB) was discovered by the MAGIC telescope in La Palma, the Canary Islands. The research team, which has involved several gro... |
6 March 2009
04:39 GMT |
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In fact, to be more accurate, several universes, or hidden realities may exist all around us daily, scientists investigating the mysteries of dark matter say. The recent surge in evidence that proves the existence of the elusive substance has forced scientists to reconsider the exact role that dark matter plays in ou... |
5 March 2009
04:04 GMT |
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The Ultraviolet/Optical Telescope (UVOT) instrument aboard NASA's Swift satellite has been recently used by British astronomers to hunt for a gamma-ray explosion just 251 seconds after it started manifesting itself. To pinpoint the onset of an emission in such a short time has only been made possible by the fact... |
3 March 2009
05:14 GMT |
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The Fermi Gamma-ray Space Telescope, which was formerly known as the Gamma-ray Large Area Space Telescope (GLAST), has recently recorded one of the most massive and extreme gamma-ray bursts in history. The emission was so large, that it even made scientists raise some new questions about this type of events, which th... |
20 February 2009
04:53 GMT |
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