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Home > News > Tags > protoplanetary disks
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Stories about: protoplanetary disks |
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In a paper to appear in an upcoming issue of the Astrophysical Journal, researchers suggest that extrasolar planets generally start developing around stars that have high concentrations of chemical elements heavier than hydrogen and helium.
Interestingly, the team that conducted the new study found that exoplanets ... |
20 April 2012
04:46 GMT |
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In a paper published in the March 30 issue of the top journal Science, experts proposed that the organic molecules which enabled the development of life here on Earth were first formed in the protoplanetary disk around the young Sun.
The conclusion belongs to a series of computer simulations, which revealed that the... |
30 March 2012
04:12 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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A while back, we reported on the chance that cosmic fireworks may soon drench the core of the Milky Way. A gas cloud was observed heading for the supermassive black hole in the center of the galaxy, and its collision with the dark behemoth was bound to cause a firework show of sorts. Now, astronomers determined the o... |
27 December 2011
16:01 GMT |
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Investigators discovered that an extrasolar planet in the Beta Pictoris star system was responsible for a warping they had detected in the star's debris ring. At first, the team believed that the crookedness may have occurred as a result of a second exoplanet being present, but the new study shows that is not th... |
9 December 2011
11:02 GMT |
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Astronomers operating the European Space Agency's (ESA) Herschel Space Observatory announce the discovery of a massive reservoir of water in the protoplanetary disk surrounding the young star TW Hydrae. The reserve holds vast amounts of water, the team explains.
The study revealed that the water vapor which He... |
21 October 2011
02:17 GMT |
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According to an astronomer at the NASA Goddard Space Flight Center (GSFC), in Greenbelt, Maryland, the presence of forming extrasolar planets around a young star can be detected by looking for spiral arms forming within the protoplanetary disk around said star.A protoplanetary disk is a circular structure forming aro... |
19 October 2011
10:59 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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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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The international astronomical community is current in doubts whether a recently-found extrasolar planet actually exists, or whether it is simply a fluke in long-term calculations. If the body is indeed real, then many of our theories on how planets form around stars may need revising. The peculiar object was discove... |
9 December 2010
02:52 GMT |
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Astronomers have recently discovered the the motion and behavior exhibited by Saturn's rings could be very similar to the same traits displayed by the entire spiral arm of a galaxy. In other words, it could be that the same physical principle underlie the action of both bodies, which is an amazing finding, becau... |
2 November 2010
03:55 GMT |
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Astronomers were recently able to discover a new exoplanet, which revolved around a binary system. Far from answering questions, the finding raised new ones, and casted doubt on established theories about how particular types of planets form.The binary system the investigators were analyzing is located in the constel... |
23 October 2010
04:01 GMT |
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Astronomers believe they may have discovered a new type of stellar event, given that they were able to identify a peculiar dust ring spinning around an old star. This is weird simply because such disks usually develop only around young, blue stars, and they disappear in time. In the case of the Sun, it was such a dis... |
23 September 2010
02:55 GMT |
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Given the high number of exoplanets discovered over the past few years, it's worth taking a look at the main methods through which such celestial bodies form and develop. Exoplanets, or extrasolar planets, is the name given to celestial bodies that orbit stars other than the Sun. These objects can exist tens to ... |
6 September 2010
04:08 GMT |
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One of the theories that astronomers had about how gas giants form says that the massive objects can appear around their parent stars when the cosmic fireballs are still very young. That is to say, as soon as the stars form, the planets appear, and then grow by accumulating gas. Though the idea was widely circulated... |
11 June 2010
03:24 GMT |
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Using data collected with the European Southern Observatory's Very Large Telescope (ESO VLT), researchers were recently able to discover two protoplanetary disks. Both of the structures caught the eyes of astronomers because they were orbiting their respective parent stars at about the same distance that Earth c... |
14 April 2010
03:59 GMT |
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Astronomers thought that they managed to unlock the secrets of planetary formation many years ago, but new data comes to challenge those beliefs. Recently, nine new transiting exoplanets were found, and their discovery reported at the RAS National Astronomy Meeting (NAM2010), in Glasgow, Scotland. When this dataset w... |
13 April 2010
09:35 GMT |
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In a groundbreaking new investigation, a team of researchers discovered that the Universe can use the same mechanisms it employs in forming stars for producing large, planet-like objects. In a survey of 32 brown dwarfs, identified in he Taurus nebula of the Milky Way, astronomers found a weird object orbiting one of ... |
7 April 2010
15:01 GMT |
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Ever since binary star systems were first discovered, experts have been wondering as to whether they can sustain Earth-sized exoplanets or not. The two stars usually exert massive gravitational forces on each other, forces that could easily disintegrate a planetary body, assuming they allowed for it to form in the fi... |
2 February 2010
03:03 GMT |
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One of the most peculiar things about our Sun is the fact that it is single. Most class-G stars, the type that includes our own, exist in binary systems, where two stars orbit each other. Astronomers have even identified triple star systems, and some experts infer that groups of as much as seven stars orbiting each o... |
19 January 2010
02:12 GMT |
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Just a few thousands of years after the early Sun appeared from a collapsed cloud of space gas and dust, a protoplanetary disk started forming around it. This structure was made of various types of debris, such as dust that was left after the star ignited. As it was revolving around the new, hot celestial body, the d... |
15 January 2010
03:17 GMT |
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Astronomical knowledge has advanced over the years to a point where experts can definitely say that exoplanets can also form around massive stars. The process was initially thought to only be possible around Sun-like types, but that has since been proven wrong. While searching for possibly inhabitable worlds close to... |
12 January 2010
09:07 GMT |
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In the early days of the solar system, when the Sun was still young, and the planets were racing and colliding with each other all over the place, the Earth avoided a cruel faith. According to astronomers, there was a very high possibility for the planet to fall into the new star, and, in fact, this is what should ha... |
8 January 2010
03:11 GMT |
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For many years, astronomers have been looking for exoplanets around Sun-like stars, as they believe that these celestial bodies have the highest chances of harboring planets similar to our own. However, in recent studies, it has been demonstrated that planetary formation is a direct, natural byproduct of stellar form... |
7 January 2010
02:33 GMT |
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Using the enormous resolve power of the twin W. M. Keck Observatory telescopes, in Hawaii, astronomers have been able for the first time to look inside the protoplanetary disk around a newly formed star. The observations have the ability to significantly increase our knowledge of how planets are formed, and how they ... |
23 December 2009
10:51 GMT |
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Scientists from the Pennsylvania State University (Penn State) have recently discovered a new system of brown dwarfs orbiting a giant, dying star. Rather than clearing things up, the finding also served to deepen the mystery associated with brown dwarfs. It would appear that established astronomical knowledge is also... |
23 December 2009
05:43 GMT |
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It's common knowledge that, once a star forms from a collapsed cloud of cosmic gas and dust, it produces a protoplanetary disk around it. In this disk, large amounts of dust eventually clump together and give birth to meteors, asteroids, comets, moons and planets. But, in some telescope images, stars reveal disk... |
29 August 2009
03:44 GMT |
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