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Stories about: dark energy |
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During the night of September 14-15, the Baryon Oscillation Spectroscopic Survey (BOSS) experienced its first light, in an event that marked the beginning of a new type of quest for dark matter. The new method relies on the now-emerging technology known as baryon acoustic oscillation (BAO), which may have the ability... |
2 October 2009
05:37 GMT |
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In various new-age astronomy theories, dark matter and dark energy play central roles. In spite of the fact that even newer models have demonstrated that some yet-unexplained phenomena do not require the introduction of these elements in the equation, some scientists continue to push on for the creation of instrument... |
3 September 2009
05:51 GMT |
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Experts in advanced mathematics have recently proposed a new model to explain our Universe that is so different from what we have held as true thus far, that it has left many gasping for air. According to the new theory, it may be that our Universe is not expanding at all. Rather, galaxies appear to be pushing away f... |
18 August 2009
16:21 GMT |
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One of the primary and most broad goals of astronomy is to determine the speed at which the Universe is expanding, a phenomenon that was first described by Edwin Hubble. In honor of the great scientist, modern-day experts have termed the constant that gives the Universe expansion speed Hubble's constant. At this... |
9 June 2009
15:41 GMT |
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In 2003, after unsuccessful attempts at explaining dark energy through other means, a group of astrophysicists proposed the “chameleon” particle model to explain the hypothetical form of energy. Basically, what the model stated at the time was that this class of particles was able to change its mass on it... |
30 May 2009
02:57 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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If today's Atlantis launch goes according to plan, and the astronauts aboard the shuttle manage to complete all of their assigned objectives, the Hubble Space Telescope will once again become the most efficient observatory currently in our possession. The five spacewalks that were scheduled for the STS-125 missi... |
11 May 2009
02:31 GMT |
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In reality, it's very difficult to predict or estimate what happened to the Universe in its earliest days, but computer and mathematical models have over the years yielded numerous interesting theories, which can neither be proven, nor disproved by experts. The most recent model that emerged following complex si... |
9 May 2009
10:01 GMT |
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Ever since the fist science-fiction books and movies came out, people have been fascinated with the idea of traveling faster than the speed of light. One could say that it's just a psychological thing, brought forth by theories stating that nothing in the Universe can travel faster than the speed of light. But, ... |
9 May 2009
06:35 GMT |
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The Hubble Constant is, in astronomical terms, the value given to the speed at which the Universe expands. It's unknown at this point, but mathematicians and physicists have narrowed its possible range down to about a five percent uncertainty rate. And while this is good news for those seeking to learn exactly h... |
8 May 2009
18:31 GMT |
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According to astronomical predictions, astronomers looking at the skies in the distant future will have the distinct impression that the Milky Way is the only galaxy in the Universe, as the force known as dark energy will completely erase the Big Bang's fading signal, and will push other collections of star syst... |
24 February 2009
04:15 GMT |
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According to the latest theory on the creation of the Universe, dark energy is the force responsible for the multiple cycles everything around us undergoes. The year 2002 saw Paul Steinhardt, a scientist at Princeton University, and Neil Turok, at the University of Cambridge, developing the “never-ending cycle&... |
19 January 2009
03:52 GMT |
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A new study performed with the help of the Chandra X-ray Observatory, focused on galaxy clusters, indicated that they are forming at a slower rate than they should be, which is considered a new piece of evidence in the complicated case of dark energy. These results, in tandem with those of previous extensive res... |
17 December 2008
15:41 GMT |
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September 29th, the “Magnificent 7” European scientific program was presented to the public. It is the joint effort of seven bold projects to address some of the most difficult topics raised by astroparticle physics, such as dark matter, cosmic rays' origin, gravitational waves or the reasons behind ... |
30 September 2008
07:09 GMT |
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The mysterious force that drives the patches of matter at incredible speeds and in uniform directions through space, which can't be explained by comparison to any known gravitational force, and which may also exist outside of the observable universe, was called "dark flow."If you think you already know all there... |
25 September 2008
06:47 GMT |
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This hypothetical form of energy is supposed to fill all the space and it continuously pushes its elements apart, increasing the universe's expansion rate. It is one of the most important things that LHC scientists are eager to prove. The standard model of cosmology claims that the universe is comprised 74%... |
11 September 2008
04:10 GMT |
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According to a new study carried out at the Max Planck Institute for Radio Astronomy, the mass ratio between the electron and the proton remained constant over the past 6 billion years. This comes to contradict the findings of a study conducted nearly two years ago which suggested that the masses of the two particles... |
14 July 2008
08:48 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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Approximately a decade ago astronomers discovered that not only is the universe expanding in space-time, but also that this expansion is accelerating. Since there was no explanation to why this is happening, they proposed the concept of dark energy, a form of energy that makes up about 75 percent of the mass of the u... |
24 May 2008
04:54 GMT |
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The universe is expanding. Not only that, but this expansion seems to be accelerating and is now blamed by physicists on a strange form of energy called dark energy. The problem with dark energy, as it is with dark matter, is that we can't seem to find any direct evidence of its existence. What if this cosmic ac... |
13 May 2008
04:39 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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Dark matter is believed to be responsible for more than 70 percent of the total mass of the universe, however somehow we can't find any, even while regular matter represents only 4 percent of the total mass. This means only two things: either dark matter presents weak interactions towards ordinary matter or dark... |
7 April 2008
10:24 GMT |
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We have yet to find direct evidence of dark energy existence, fact which is kind of annoying for most cosmologist. But do we really need it to explain the absence of more than a quarter of the matter in the universe? Well apparently not, according to a study published by the Carnegie Institution of Washington. Carbon... |
29 February 2008
03:29 GMT |
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Either it is exerting an extra gravitational pull on the galaxies or is driving the expansion of the universe, dark matter and dark energy remain mostly mysterious even today. Astrophysicists say that the matter distribution in the universe points towards a concentration of 4 percent of regular matter while the remna... |
1 February 2008
03:02 GMT |
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Is the expansion of the universe triggered by the repulsion force of dark matter or by the pulling action of a mysterious massive force originating in the outer boundaries of the universe? Such information is currently unavailable, but one thing is for certain: gravity is not enough to keep the galaxies and galaxy cl... |
31 January 2008
03:33 GMT |
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The problem of dark energy and dark matter was first tackled by Albert Einstein, while working on The Theory of General Relativity. His calculations showed that the universe should present one of the two possible states: either expanding, or contracting. Unwilling to believe his own work, regardless of the results, h... |
30 November 2007
10:06 GMT |
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While working on the Theory of General Relativity, Einstein was trying to come up with an equation of the static universe, which required a cosmological constant to balance the effect of gravity so the matter in the universe would not collapse to a big crunch, but would rather remain in general configuration seen tod... |
28 November 2007
06:27 GMT |
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