Search results for Big Bang:
Before the Big Bang: A Twin Universe?
Apr 09, 2008 |
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Until very recently, asking what happened at or before the Big Bang was considered by physicists to be a religious question. General relativity theory just doesn’t go there – at T=0, it spews out zeros, infinities, ...
Billions of particles of anti-matter created in laboratory
Nov 17, 2008 |
4.9 / 5 (128) |
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(PhysOrg.com) -- Take a gold sample the size of the head of a push pin, shoot a laser through it, and suddenly more than 100 billion particles of anti-matter appear.
How did the universe begin?
Jun 24, 2008 |
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One of the most interesting questions considered by astrophysicists deals with the start of our universe. Indeed, there is a great deal of speculation on the subject, with different theories about how the universe began, ...
A Test of the Copernican Principle
May 22, 2008 |
4.3 / 5 (93) |
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The Copernican principle states that the Earth is not the center of the universe, and that, as observers, we don’t occupy a special place. First stated by Copernicus in the 16th century, today the idea is ...
Could the Universe be tied up with cosmic string?
Jan 18, 2008 |
4.3 / 5 (93) |
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A team of physicists and astronomers at the University of Sussex and Imperial College London have uncovered hints that there may be cosmic strings - lines of pure mass-energy - stretching across the entire Universe.
Scientists detect cosmic 'dark flow' across billions of light years
Sep 23, 2008 |
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(PhysOrg.com) -- Using data from NASA's Wilkinson Microwave Anisotropy Probe (WMAP), scientists have identified an unexpected motion in distant galaxy clusters. The cause, they suggest, is the gravitational ...
Latest Supercomputer Calculations Support the Six-Quark Theory
Feb 11, 2008 |
4.5 / 5 (68) |
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A new calculation, reported in the January 25, 2008 issue of Physical Review Letters, confirms the six-quark theory of particle-anti-particle asymmetry. This is the first complete calculation of this phenomenon to employ ...
Next stop: The fourth dimension
Sep 03, 2008 |
4.4 / 5 (69) |
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How did the universe come to be? What is it made of? What is mass? Can science prove that there are other dimensions? We may have answers soon.
What if dark matter particles aren't WIMPs?
Dec 12, 2008 |
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(PhysOrg.com) -- For years, many physicists have accepted that dark matter is composed of weakly interacting massive particles (WIMPs). The fact that WIMPs can naturally explain the amount of dark matter in the universe – ...
Physical reality of string theory demonstrated
Jul 06, 2009 |
4.4 / 5 (67) |
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String theory has come under fire in recent years. Promises have been made that have not been lived up to. Leiden (The Netherlands) theoretical physicists have now for the first time used string theory to describe a physical ...
Physicists and engineers search for new dimension
Mar 10, 2008 |
4.3 / 5 (64) |
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The universe as we currently know it is made up of three dimensions of space and one of time, but researchers in the Department of Physics and the Department of Electrical and Computer Engineering at Virginia Tech are exploring ...
Study: Dark matter in newborn universe doused earliest stars
Dec 03, 2007 |
4.3 / 5 (64) |
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“Dark star crashes, pouring its light into ashes” – The Grateful Dead, 1967. Perhaps the first stars in the newborn universe did not shine, but instead were invisible “dark stars” 400 to 200,000 times wider ...
Looking for the quantum properties of the Big Bang
Jun 13, 2008 |
4.3 / 5 (63) |
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“General relativity doesn’t recognize quantum physics,” Martin Bojowald tells PhysOrg.com. And that, he insists, causes problems when it comes to understanding the evolution of the universe from the Big Bang: “You get to ...
Hubble Sees Double Einstein Ring
Jan 10, 2008 |
4.6 / 5 (58) |
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The NASA/ESA Hubble Space Telescope has revealed a never-before-seen optical alignment in space: a pair of glowing rings, one nestled inside the other like a bull's-eye pattern. The double-ring pattern is ...
Stars Fueled by Dark Matter Could Hold Secrets to the Universe
Nov 03, 2009 |
4.4 / 5 (58) |
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(PhysOrg.com) -- The first stars in the universe may have been very different from the stars we see today, yet they may hold clues to understanding some of the mysterious features of the universe. These "dark ...
