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Home > News > Tags > supernovas
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Stories about: supernovas |
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Astronomers are currently keeping a close eye on the evolution of an interesting binary star system, which features two white dwarfs. The two objects are apparently about to merge, an event that will lead to the formation of a new, living stellar object.White dwarfs are the helium-burning remnants of Sun-sized stars ... |
11 May 2011
09:33 GMT |
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Investigations conducted with a number of dedicated observatories around the world have revealed that some locations in the sky are cosmic ray “hot spots,” whereas others are relatively inactive in this area. The Vela supernova remnant was recently determined to be such a hot spot. One of the instruments ... |
6 May 2011
05:16 GMT |
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Observations conducted with two NASA telescopes reveal the intricacies of the Arp 147 galactic system, a group of two interacting galaxies that produce some interesting effects in their surroundings.At one time, the galaxies making up this system were separate and distant. The one on the right side of this image was ... |
3 May 2011
07:44 GMT |
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In a new scientific study, investigators propose that neutron stars may be forced into instantly collapsing or exploding by short-term accumulations of what is known as “vacuum energy.”Astrophysicists believe that the stuff can accumulate in just milliseconds, and argue in the research paper accompanying ... |
20 October 2010
17:01 GMT |
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For more than 10 years, astronomers have been observing the remnants of a supernova explosion, that took place nearby. Now, these studies are changing the way they understand the evolution of galaxies.Supernova blasts are some of the most powerful events in the entire Universe. When they occur, they can briefly outsh... |
3 September 2010
01:40 GMT |
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As young massive stars form from large clouds of interstellar gas and dust, they are capable of producing massive ripples through the space structures, which stir up the gas, promoting even further stellar formation.The conclusion belongs to a new scientific study, which showcases the example of a massive star that w... |
19 August 2010
05:16 GMT |
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In a groundbreaking new study, experts were able to determine that even nova explosions can cause the release of high-energy gamma-rays. This type of emissions was previously thought to be reserved exclusively for supernova explosions, the death throes of massive stars several times more massive than the Sun. Now, us... |
13 August 2010
05:59 GMT |
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When a massive star reaches the end of its burning cycle, it becomes unable to sustain nuclear fusion all on its own, and also exhausts all of its hydrogen fuel. When this happens, the object sheds the outer layers of its atmosphere, all the way to the core, in a violent explosion called a supernova. Classifying the ... |
18 December 2009
16:01 GMT |
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In new observations of the distant skies, astronomers managed to identify two supernova explosions that far exceeded any known record of age and distance. The Type IIn bodies were estimated to be approximately 11 billion years old, about two times more so than the previous record-holder, a supernova that exploded som... |
9 July 2009
04:16 GMT |
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Some years ago, the explosion of Type 1 supernovas led astronomers and astrophysicists to inferring that dark energy existed. Since then, analyzing these massive celestial events has been the only way of predicting the properties and traits of the mysterious form of energy. Due to the fact that the relative distance ... |
23 May 2009
07:04 GMT |
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Gleaming at supernova remnants (SNR) is not always easy, mostly because they are either very distant, or because they are surrounded by large amounts of dust. In either case, direct observations become very difficult, because only observatories working in radio, infrared, or ultraviolet wavelengths can pierce through... |
23 April 2009
09:56 GMT |
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Astronomical theories have thus far held that a massive star's life cycle is something that is clearly determined ever since its birth, and that there is nothing that can go amiss in the fairly simple process. Talking about celestial bodies some 100 times bigger and up to a million times brighter than the Sun, a... |
23 March 2009
04:04 GMT |
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It's final! Astronomers are now able to say for sure that red supergiant stars indeed create type II supernovas, a hypothesis that has been around for a while, but for which there have been no direct pieces of evidence until now. This type of supernovas is prompted by the collapse of impressive stars, several hu... |
20 March 2009
04:00 GMT |
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It's common knowledge that black holes reside in the center of each galaxy, where they happily feed on galactic gases emanating from dying stars and other cosmic bodies, such as planetary nebulas. But, in the case of two known galaxies, M31, our “neighbor” the Andromeda Galaxy, and NGC 5866, there ar... |
13 January 2009
10:05 GMT |
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Some ten years ago, the remnants of the supernova Cassiopeia A were first discovered, and astronomers were able to observe for the first time a very clear structure, with little details also visible. Now, more than a decade later, scientists using both space- and ground-based telescopes managed to get a glimpse of ho... |
8 January 2009
02:20 GMT |
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