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Home / News / Tags / supernova
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Astronomers have finally discovered proof that confirms a long-held belief, namely that the shock waves generated by supernova explosions act like giant and extremely powerful particle accelerators. They came to this conclusion when they recently discovered that cosmic-ray particles, generated only when a massive sta... |
26 June 2009
02:44 GMT |
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Over the past 15 years, the world-famous star Betelgeuse, after which even cartoons were drawn, has been constantly reducing its size, and astronomers are puzzled at why this is happening. At this point, existing explanations of this phenomenon are unsatisfactory. Overall, experts reported at the 214th meeting of the... |
10 June 2009
05:04 GMT |
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Millisecond pulsars are the fastest spinning objects in the Universe, rotating around themselves up to tens of times per second. They are the remnants of supernova explosions, created by giant stars at the end of their burning cycle. But astronomers have found no intermediary stages in the life of a pulsar until now,... |
22 May 2009
13:41 GMT |
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The Very Large Telescope has just photographed one of the most impressive galactic collisions in astronomy history, while at the same time capturing the explosion of a supernova, all in the same image. The two colliding galaxies, known collectively as Arp 261, are located in the Libra constellation and are more than ... |
17 March 2009
03:41 GMT |
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Researchers dealing with drills in the Antarctic ice sheets have recently managed to identify the chemical traces of a supernova explosion that took place more than 1,000 years ago, by analyzing minute amounts of the particles that remained trapped in the ice. The samples that have been analyzed for the new research ... |
4 March 2009
05:47 GMT |
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The PSR J0108-1431 object, located just 770 light-years away from the Earth, is one of the closest pulsars ever observed, but its light is faint, as evidenced by previous optical surveys. It's a pulsar, a collapsed star that spins around its axis very fast, giving away light trails resembling those of a lighthou... |
27 February 2009
08:29 GMT |
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Stellar dust can be found in nearly every portion of a galaxy, and its role is one of the most important in the Universe – more specifically that of facilitating the formation of stars and planets, implicitly. Up until this point, astronomers have had no idea as to what the actual origin of this dust might be, ... |
25 February 2009
15:01 GMT |
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Up until this point, astronomers have believed that when a supernova explodes there are only two possible outcomes – either a black hole or a neutron star. However, recent observations have shown that a third possibility also exists. Quark stars are celestial bodies that form when the pressure created by the su... |
23 February 2009
06:54 GMT |
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After processing new readings gathered from various space- and Earth-based telescopes and observatories, astronomers now say that the energy that a black hole can unleash is sufficient to wipe out the galaxies around them, and send “death waves” for millions of light-years around the blast zone. All black... |
27 January 2009
05:56 GMT |
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The large flash of light that left astronomers puzzled more than three years ago has yet to be explained, Hubble scientists announced recently, although many hours were spent studying the photographs the space telescopes relayed back to Earth on that day. According to the astronomers, the readings do not match those ... |
13 January 2009
09:17 GMT |
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The SSC Napoli Nokia 7310 Special Edition comes as a tribute to the Italian football team with the same name, thus Nokia having a go at impressing the football fanatics and therefore increasing its sales considerably. Though associating mobiles with football teams is not that uncommon, it's obvious that Nokia�... |
23 December 2008
09:33 GMT |
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This is not the first time this Nokia handset is rumored to be going to T-Mobile. Since it was first announced, in June, the mobile has been included in the aforementioned operator's lineup on several occasions. Same deal this time too, only now a presumed release date has been mentioned as well, so there's... |
23 December 2008
01:59 GMT |
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In November 1572, Danish astronomer Tycho Brahe saw (or thought he saw) a brand new star in the Cassiopeia constellation, without even using a telescope. In fact, it was a supernova, the violent death of a star, and it was shining so bright that it was visible in broad daylight and even outshone Venus at some point. ... |
4 December 2008
03:08 GMT |
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As researchers finally conducted their first direct measurement of a young, far galaxy's magnetic field, the result shocked them, since it was found to be ten times stronger than the Milky Way's, exactly the opposite of what they had originally predicted.The 6.5 billion light years away young galaxy DLA-3C2... |
2 October 2008
08:53 GMT |
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Besides providing extraordinary pictures of the universe, Hubble sometimes likes to play with scientists' minds. Recently, it did it again, as the photos it sent showed a sudden light in the middle of nowhere which lasted for about 100 days before fading into darkness again. Surely, even with instruments l... |
16 September 2008
07:10 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 particular image featured here, showing what appears to be a large ribbon of gas floating through our galaxy, shows in fact only a small section of a much larger circular structure originating from a supernova explosion that took place somewhere in the spring of 1006 A.D., dubbed SN 1006. The progenitor star, a w... |
1 July 2008
10:30 GMT |
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Although it was theoretically predicted that some of the most massive stars in the universe emit a bright signal in the ultraviolet spectrum just before going 'nova', this is the first time when such a flash of light is observed. Most of the supernova events occurring in the visible universe are usually see... |
13 June 2008
02:52 GMT |
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When it was first discovered in the 1980s the deceptive shape of the object known as G350.1-0.3 indicated that it was most likely a background galaxy. Since nobody ever bothered to study it more closely, the object remained forgotten until recently when observations with ESA XMM-Newton X-ray Space Observatory reveale... |
11 June 2008
05:55 GMT |
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Nothing can escape the gravitational pull of black holes, not even light; they draw in every bit of matter and energy passing beyond their event horizon. According to a new study, some of the heaviest black holes in the universe, weighing up to several billion solar masses and found in the cores of active galactic nu... |
5 June 2008
03:45 GMT |
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While searching for supernova explosions that occurred in the early universe, in hope to probe dark energy, astronomers discovered two new objects in the solar system, one orbiting somewhere between Uranus and Neptune while the other lurking in the outer regions of the system. The search for supernova explosions most... |
4 June 2008
04:08 GMT |
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Similar to neutron stars, quark stars are believed to be highly compact stellar objects that have been created during the supernova explosion of a relatively massive star. Theoretically, these objects may exist and could be formed only of elementary sub-atomic particles known as quarks, although none has been observe... |
4 June 2008
03:27 GMT |
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Nokia has been showing off three new handsets lately, part of a new S40 series of phones that has a "very cosmic" name. The handsets are 7310 SuperNova, 7510 SuperNova and 7610 SuperNova, all of them being mid-end devices created to offer a simple mobile experience to end users. All good until now, but the problem is... |
3 June 2008
08:34 GMT |
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After Nokia 7310 Classic was renamed Nokia 7310 SuperNova, two new handsets that bear the SuperNova name have appeared: Nokia 7510 SuperNova and Nokia 7610 SuperNova. The handsets were not officially announced, but they both appear on the Nokia Poland website. As the 7310 model, the new SuperNova Nokia phones are not... |
2 June 2008
02:59 GMT |
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It didn't take long for Nokia to officially unveil its latest S40 handset, the 7310 Classic, and after several leaked details and images with the phone, we now have the confirmation that the device is real and it should hit the market in a short time. The Finnish company chose to change a bit the 7310 Classic ... |
31 May 2008
03:53 GMT |
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Cassiopeia A is a supernova remnant located about 9,000 light years away from Earth which was created by a supernova explosion somewhere around the year 1680 and one of the brightest radio sources in the sky. Although modern observations taught much about the expanding remnant, one particular problem remained to be s... |
30 May 2008
02:44 GMT |
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The star was in fact known for a long time to be a magnetar, albeit SRON Netherlands Institute for Space Research astronomers have only recently discovered that it emits a strange high energy X-ray beam, sweeping across the surrounding medium as the star revolves around its axis. "I was looking for new sources of hig... |
22 May 2008
11:05 GMT |
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On January 9, researchers from Princeton University pointed NASA's Swift satellite in the direction of the NGC 2770 galaxy, hopping to the see afterglow of a supernova explosion known as SN 2007uy, which had occurred only one month before. Instead, the team got a struck of luck and captured a five minute X-ray b... |
22 May 2008
03:38 GMT |
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The newly found supernova remnant is the result of a stellar explosion that would have been seen from Earth some 140 years ago. The previous youngest supernova remnant found in the Milky Way was Cassiopeia A, resulted some 330 years ago. The current record holder, G1.9+0.3, represents to astronomers a missing link be... |
15 May 2008
02:54 GMT |
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The vast majority of stars end their lives through supernova explosions while others, more massive, are thought unable to produce such explosions simply because they implode and collapse under their own weight only to produce a black hole. Since these particular types of stellar death don't generate brilliant em... |
10 May 2008
03:44 GMT |
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The Argonne Blue Gene/P supercomputer may be the most powerful in the world but it will still require 22 million computational hours in order to simulate a process that in real life only takes 5 seconds to unfold. Robert Fisher and Cal Jordan from the University of Chicago's Center for Astrophysical Thermonuclea... |
5 May 2008
04:29 GMT |
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Most stars in the universe, including our Sun, end their lives as white dwarfs, highly dense objects burning the leftovers of the nuclear fuel of what used to be the core of the star during most of its life. These objects can be so dense that they can pack a mass of about 1.5 times that of the Sun into a volume compa... |
5 May 2008
02:57 GMT |
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A comparison between supernova explosions taking place today and those that occurred early in the life of the universe reveals that the latter appear to age slower, as if time was warped somehow. It may look as counterintuitive or even impossible to some of us, but in fact, this is confirmed by the inflation theory, ... |
29 April 2008
02:51 GMT |
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According to astrophysicists, the Sun is about 5 billion years old and will continue to shine for at least as much time before exploding into a supernova to destroy the whole solar system. Latest calculations reveal that the inner rocky planets, including Earth, will be destroyed long before the Sun even swells into ... |
23 April 2008
05:48 GMT |
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By using the Chandra X-ray Space Observatory and the XMM-Newton Space Observatory, astronomers were able to observe a light echo originating from a supernova explosion in the Large Magellanic Cloud, which was first observable from Earth nearly 400 years ago. The supernova remnant, dubbed SNR 0509-67.5, lies 160,000 l... |
21 April 2008
08:27 GMT |
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With the help of observations made with NASA, JAXA and ESA's X-ray satellites, astronomers revealed that the supermassive black hole at the center of our galaxy, dubbed Sagittarius A*, suffered a massive outburst some three centuries ago. Sagittarius A* is about 4 million times more massive than the Sun, however... |
16 April 2008
02:52 GMT |
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Three weeks ago, the Swift satellite detected the brightest gamma-ray burst in the visible universe in a galaxy located more than 7 billion light years away from Earth. It is though that the supernova explosion could have been the result of the collapse of a massive star into a black hole, and that, during the explos... |
12 April 2008
03:47 GMT |
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Previous stellar models showed very clearly that all stars must go through a supernova stage at the end of their lives; however, a new study reveals that supermassive stars may not be able to generate supernova explosions, but they would rather suffer a sudden gravitational collapse to turn into a black hole. But if ... |
7 April 2008
08:57 GMT |
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Nickel 56 is one of nickel's unstable isotopes which is not occurring naturally here on Earth. However, it is formed during the supernova explosion at the end of a star's life. Physicists from the IPN Orsay and the GANIL claim they have been able to compress the nucleus of Nickel 56 for the first time, in o... |
1 April 2008
10:25 GMT |
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NGC 2397 is just another spiral galaxy presenting prominent dust lanes along its arms; older stars in its central regions and newly forming stars in the spiral arms are shown blue in this image. The galaxy is located about 60 million light-years away from Earth, however the Hubble Space Telescope is still able to pro... |
1 April 2008
04:06 GMT |
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Stars spend most of their lives burning hydrogen through nuclear fusion reactions to produce the energy required to remain stable as long as possible. By doing so, two hydrogen atoms are fused together to create a single helium atom and a fair amount of energy. However, at some point in time, the star will begin proc... |
21 March 2008
06:47 GMT |
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The Large Magellanic Cloud is a small galaxy in the Local Group only 160,000 light years away from Earth. Recently, NASA's Chandra X-ray Space Observatory discovered a large supernova remnant that contains large amounts of oxygen. The N132D supernova remnant is part of an oxygen-rich remnant and the brightest fe... |
18 March 2008
04:31 GMT |
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The Geminga pulsar was created about 340,000 years ago through the supernova explosion of a regular star, inside what is now called the Geminga supernova. It is well known that supernovae can provide with the required energy to accelerate energetic elementary particles into interstellar space, the so-called cosmic ra... |
8 March 2008
07:01 GMT |
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It would certainly appear so, and considering that our galaxy is filled with at least 200 billion stars, it would be no surprise if one of these rays of death would decide to hit our planet some day. However, the subject of discussion here is a star dubbed WR104, located about 8,000 light years from Earth in the Sagi... |
6 March 2008
03:48 GMT |
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Take a good look at the picture of this nebula, this is how our solar system will look like in about 5 billion years or so. NGC 2371's glowing bubble of gas surrounding a white dwarf is a planetary nebula probably resulted in the explosion of an average star, relatively similar to the Sun. All that is left of th... |
4 March 2008
10:45 GMT |
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X-ray images of the Kes75 supernova remnant shows it to house what seems to be a rapidly spinning neutron star, commonly known as a pulsar, which could have been created in the outcome of the supernova explosion. Lying at a distance of about 20,000 light years away from Earth, Kes75's pulsar located close to the... |
1 March 2008
04:31 GMT |
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Interstellar clouds of dust and gas pulled together by gravitational forces often experience instabilities, that can result in spectacular explosions such as that of a supernova. Furthermore, if the individual atoms that compose the respective cloud of gas behave like tiny magnets, the same outcome could be experienc... |
29 February 2008
10:24 GMT |
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Supernova SN 2007on was discovered last year in the location of what previously was a binary system, composed of at least one white dwarf and another stellar companion, most likely a regular slightly more massive star or possibly a second white dwarf. It is now known that the supernova is a Type Ia, meaning it was de... |
14 February 2008
03:46 GMT |
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The Polar Research Institute of China has completed the installation of the robotic observatory PLATeau only after two weeks from their arrival at the Dome Argus location on the Antarctic continent, the highest point of the Antarctic Plateau. PLATO has been built by the University of New South Wales, in Sydney, and i... |
4 February 2008
09:23 GMT |
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Supernova explosions are generally triggered by a unbalance between the gravitational force produced by the star and the thermonuclear fusion reactions. Nonetheless, astronomers argue that such explosions could be determined through more stronger interactions, like those between a white dwarf and a medium size black ... |
30 January 2008
04:49 GMT |
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