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Stories about: massive stars |
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Investigators studying the supernova remnant Cassiopeia A say that an analysis of the distribution of chemical elements within the structure suggests that the massive precursor star that spawned the remnant was turned inside out by the huge blast.
To reach this conclusion, researchers first had to map the distributi... |
30 March 2012
03:00 GMT |
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Astronomers are currently beginning to rethink their position on the possibility of life existing on extrasolar planets orbiting neutron stars. It could be that new planetary systems actually form around destroyed stellar objects, such as those that create the neutron star. These structures form once a massive star... |
9 March 2012
04:52 GMT |
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During an interview Time magazine conducted with American astrophysicist Neil deGrasse Tyson, a reader asked the scientist about what he finds to be the most astounding fact about the Universe. The video above was created to showcase his answer.
Right now, Tyson is the Frederick P. Rose Director of the Rose Center ... |
7 March 2012
02:29 GMT |
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Astronomers from the Massachusetts Institute of Technology, the McGill University, the University of Amsterdam and the University of Minnesota say that they were recently able to detect all the phases of thermonuclear burning processes taking place on the surface of a neutron star.
The object, commonly referred to ... |
2 March 2012
14:21 GMT |
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This image shows what the largest star in the Eta Carinae binary system might look like when it blows up, in the near (astronomical) future. This may translate into a few million years from now, but that is a very brief time in universal terms.The largest star in the system has already experienced a massive explosion... |
25 February 2012
05:55 GMT |
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About 174 years ago, one of the largest stars in the Milky Way, called Eta Carinae, underwent something called the Great Eruption. This was a huge explosion that made it the second-brightest star in the sky for about a decade, and which researchers are now finding was colder than first calculated.
This is a very in... |
16 February 2012
03:23 GMT |
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Before the Sun had planets and space rocks surrounding it on all sides, it formed inside a stellar cocoon that existed in a very chaotic stellar nursery. A similar scene was recently imaged with the NASA Spitzer Space Telescope, and the image shows an area that may soon spawn a Sun-like star.
The observations were ... |
11 January 2012
08:50 GMT |
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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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According to the conclusions of a new scientific study, it would appear that stable equilibrium is the operative concept when it comes to the formation of new stars. Even if they form from immense hydrogen clouds, they tend to shrink until they reach a balance.
This is also true for massive stars, of the type that ... |
7 December 2011
05:11 GMT |
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More than 30 years ago, based on data available at the time, famed physicist Stephen Hawking proposed that the galaxy Cygnus X-1 had a black hole at its core. Since then, astrophysicists thought they had proved him wrong, but a new study finally demonstrates the contrary. Not only that, but the team that conducted t... |
19 November 2011
03:43 GMT |
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Astronomers operating the NASA Chandra X-Ray Observatory (CXC) have just released a new image of the beautiful Carina Nebula, a cosmic formation located about 7,500 light-years away. The object lies within the Sagittarius-Carina arm of our galaxy, the Milky Way.
According to the latest X-ray measurements, the nebu... |
15 October 2011
04:39 GMT |
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The Milky Way may soon begin producing its final batch of stars, astronomers say. Large cloud of molecular hydrogen gas is heading its way, and it will make impact shortly. As this happens, the gas will stir up stellar formation, rejuvenating our old galaxy to some extent.
“We might be witnessing the final ... |
11 October 2011
06:06 GMT |
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Astronomers have been observing cosmic structures known as stellar nurseries for a very long time, trying to figure out the intricate processes that lead to stellar formation. The basic mechanisms are already being exposed, although more subtle factors remain to be discovered.
The first and most important thing a... |
26 September 2011
02:58 GMT |
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For many years, astronomers believed that galaxies developing in the early Universe were very much like voracious tigers, growing in size by literally cannibalizing on other galaxies. But new data appear to indicate that the structures were more like grazing cows, growing in size by accreting gas. In order to reach t... |
1 July 2011
10:02 GMT |
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Astrophysicists are mesmerized about a particular binary star system in the southern constellation Crux. Made up of a massive star and a pulsar, the system exhibits some weird and unanticipated behavior, as evidenced in a new study analyzing the two objects' close encounter.Within the system, the two objects bru... |
30 June 2011
05:09 GMT |
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Astronomers with the European Southern Observatory (ESO) recently trained one of their most important telescopes on an iconic target in space, the nebula that formed around the supergiant star Betelgeuse. The structure has now been observed in greater detail than ever before. In order to capture the best available vi... |
23 June 2011
08:16 GMT |
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One of the most interesting conundrums in astronomy is related to why stars don't fly apart at high speeds while they form. Theoretically, when they first condense from molecular hydrogen, they should be spinning out of control, and yet they don't. A new study analyzes the potential explanations. Experts ha... |
21 June 2011
04:40 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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Since astronomers first discovered supernova events and dwarf galaxies, they were surprised to learn that a very large portion of these tremendously energetic explosions were occurring in the smallest galaxies around. Scientists behind a new study believe they are close to figuring out why this is.They are using the ... |
22 April 2011
10:49 GMT |
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According to the conclusions of a new scientific study, it would appear that dwarf galaxies are entirely dominated by dark matter, and also that the elusive form of matter may exist in the form of dwarf stars.The investigation has interesting implications of models seeking to explain the nature of dark matter. But sc... |
20 April 2011
06:03 GMT |
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An astronomical survey was recently able to discover three new water masers inside our galaxy, the Milky Way. One of the new batch of masers is arguably the fastest of its type ever discovered. It travels through space at around 350 kilometers per second, which is pretty fast for an object of its size. Another of the... |
18 April 2011
08:04 GMT |
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Astronomers looking for massive stars in the Milky Way believe they may have finally found a population of these immense objects near the galactic plane. Experts have been looking for them using a large number of X-ray and infrared observatories.
The thing about such a population of stars is that they release mas... |
16 April 2011
04:39 GMT |
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A combination of effects produced by a dying Wolf Rayet-type star and its surrounding interstellar matter is responsible for the creation of a very interesting nebula in space, called Thor's Helmut.This object is somewhat unusual, astronomers say, because its core is powered by a giant star that is currently ver... |
9 March 2011
03:29 GMT |
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A group of investigators in the United States is currently taking on the difficult task of understanding how core-collapse supernovae (CCSN) take place, and how the resulting pulsars come to be.This has been an elusive mystery in astrophysics for many years, and a large numbers of research teams have tried to crack t... |
7 March 2011
04:50 GMT |
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Astronomers say that they may have finally found the origins of a series of interesting structural features that can be seen in NGC 2359, a formation also known as Thor's Helmet. This is an emission nebula located in the constellation Canis Major, some 15,000 light-years away from our planet. The nebul... |
15 February 2011
05:58 GMT |
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In an image released yesterday, February 9, officials at NASA announce the discovery of an impressive string of black holes, which lie in order inside a circular structure millions of light-years away. Scientists say that the new views of the ring-like structure were taken with a number of space and ground-based tel... |
10 February 2011
02:35 GMT |
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According to the latest investigations of young neutron stars, it would appear that the only way to account for the significant temperature changes they are undergoing is to accept that they have liquid cores. Experts believe that the objects' interior may be made up of a state of matter called superfluid.These ... |
5 February 2011
05:42 GMT |
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Astronomers say it could be possible that at least a few of the earliest stars ever to appear in the Universe are still lit and alive, more than 13 billion years after they appeared. Some of them might even be inside our galaxy, the Milky Way.The Cosmos as a whole I more than 13.75 billion years old, but the first st... |
4 February 2011
16:01 GMT |
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The central region of our galaxy is most definitely inhabited by a black hole, says a team of researchers that analyzed the orbits of stars at the core of our galaxy, as they were spinning around its very center. In-depth analysis of the stellar trajectories revealed that they must all be influenced by a single gravi... |
1 February 2011
06:30 GMT |
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After several years of continued observations, a supergiant star has finally revealed its most intimate secret – why is it that it has a disk containing cosmic dust and hydrogen gas around it.Generally, such disks only develop around young stars. They are called protoplanetary disks, because they have the poten... |
26 January 2011
09:27 GMT |
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A team of astronomers using a NASA telescope was recently able to see a very interesting bow shock in space, produced by a runaway star that was most likely ejected from a binary system. The celestial fireball is traveling at great speeds through cosmic dust, creating the astounding effect. According to the latest me... |
25 January 2011
03:43 GMT |
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Over the past few days, a large number of online, science-related news sites have reported that the massive star Betelgeuse will explode in 2012, in a large supernova event that will be visible from Earth. In fact, reports say that the explosion will appear as a second Sun. This is all false, experts say.A supernova ... |
22 January 2011
05:21 GMT |
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Astronomers using the NASA Spitzer Space Telescope identified a peculiar structure lurking within the M17 nebula. Called M17 SWex, the formation is a dark dust cloud, which is apparently forming new stars at a frantic pace. Still, it has not yet produced O stars, the largest of them all. Observing this cloud would ha... |
18 January 2011
14:01 GMT |
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Astronomer say that the supernova closest to our planet is called SN 1987A. They say that the precursor star in which the event originated blew up millennia ago, and add that the object is located very close in astronomical terms, in a neighboring galaxy.
As its name implies, SN 1987A was first seen in 1987, the ... |
14 January 2011
02:27 GMT |
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A team of astronomers reveals a new method of analyzing the way the Universe looked like during its dark ages. Since there was no light in the Cosmos at that time, there is no way to analyze it, except looking at the leftover glow left behind by the most ancient stars that ever appeared.After the Big Bang took place,... |
6 January 2011
04:50 GMT |
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Astronomers recently came to an agreement that Eta Carinae, one of the largest stars in the known Universe, might explode without forewarning at any time. This is important news for us because the object is just some 7,500 light-years away from Earth, practically in our backyard.In all fairness, the massive star may ... |
29 December 2010
05:28 GMT |
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Researchers studying the development of supermassive black holes have recently determined that the enormous structures experienced the highest amount of growth about 1.2 billion years after the Big Bang, when the Universe was only a fraction of its current age. Previous studies of the phenomenon indicated that the gr... |
27 December 2010
10:53 GMT |
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For the past few years, rumor had it that the red giant Betelgeuse, one of the largest known stars in the Universe, is about go supernova and implode, potentially forming a neutron star or a black hole. A new investigation shows that this won't happen any time soon.However, the concerns that the international as... |
27 December 2010
04:02 GMT |
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A team of experts has recently determined that massive stars, tens to hundred of times the mass of our own Sun, can form nearly everywhere, including in what astronomers would call isolation.
These conclusions belong to a new study carried out by astronomers at the University of Michigan in Ann Harbor, who looked ... |
21 December 2010
02:20 GMT |
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A new astronomical investigation carried out with a NASA telescope has revealed the existence of a circular, rainbow-like structure around the remnants of a star that exploded fairly recently. As the massive star reached the end of its burning cycle, it shed the external layers of its atmosphere in a massive cosmic e... |
10 December 2010
05:49 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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Nearly 50 years ago, a stellar explosion captured by telescopes posed a serious dilemma to astronomers trying to determine what type of cosmic event this was. Even now, so many years after the star disappeared, experts cannot agree on what it was. Two main camps were formed to explain the cosmic event, with one of th... |
6 November 2010
06:28 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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Astronomers operating the Hubble Space Telescope recently captured a new view of the renowned Carina Nebula, one that shows the cosmic structures in a way no one has seen before. The formation, which is located an estimated 7,500 light-years away from our solar system, reveals impressive pillars of cosmic dust and hy... |
17 September 2010
08:21 GMT |
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The bright B spectral class star S2 has been observed by astronomers since 1995, because it is revolving around the radio source known as Sagittarius A, which most likely is the supermassive black hole at the core of the Milky Way. Given that the object spins around the dark behemoth once every 16 years, it... |
30 August 2010
06:03 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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Scientists are currently puzzled at a recent discovery they made, when they found out that a rare type of neutron star, called a magnetar, was produced from a massive star about 40 times heavier than the Sun.The finding is interesting because, according to accepted theories, a star this heavy should have collapsed in... |
18 August 2010
08:44 GMT |
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Astronomers are puzzled at the discovery of a twin star system, in which one of the members is a fast-spinning neutron star called a pulsar. The object is part of class named after the resemblance they have with Earth-based lighthouses. These objects emit intermittent jets of radiation, which resemble the beams of a ... |
18 August 2010
04:15 GMT |
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When massive stars reach the end of their burning cycle, they explode in violent cosmic events known as supernovae. According to the latest computer models, just before the stars violently expel their atmospheres, they become very turbulent, which makes the explosion spread out matter unevenly in the former star'... |
4 August 2010
06:46 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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