News tagged with spacetime
Scientists investigate the possibility of wormholes between stars
(PhysOrg.com) -- Wormholes are one of the stranger objects that arise in general relativity. Although no experimental evidence for wormholes exists, scientists predict that they would appear to serve as shortcuts ...
Feb 25, 2011 |
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Physicists describe method to observe timelike entanglement
(PhysOrg.com) -- In "ordinary" quantum entanglement, two particles possess properties that are inherently linked with each other, even though the particles may be spatially separated by a large distance. Now, physicists S. ...
Jan 24, 2011 |
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Model describes universe with no big bang, no beginning, and no end
(PhysOrg.com) -- By suggesting that mass, time, and length can be converted into one another as the universe evolves, Wun-Yi Shu has proposed a new class of cosmological models that may fit observations of the universe better ...
Jul 29, 2010 |
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A Newtonian system that mimics the baldness of rotating black holes
(PhysOrg.com) -- The rotating black hole has been described as one of nature's most perfect objects. As described by the Kerr solution of Einstein's gravitational field equations, its spacetime geometry is ...
Feb 23, 2009 |
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Search results for spacetime
Every black hole contains a new universe: A physicist presents a solution to present-day cosmic mysteries
Our universe may exist inside a black hole. This may sound strange, but it could actually be the best explanation of how the universe began, and what we observe today. It's a theory that has been explored ...
May 18, 2012 |
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Scientists watch black hole feast on unlucky star
Scientists have witnessed the rare spectacle of a supermassive black hole devouring a star that had ventured too close -- an event that occurs about once in 10,000 years, they reported on Wednesday.
May 02, 2012 |
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Physicists continue work to abolish time as fourth dimension of space
(Phys.org) -- Philosophers have debated the nature of time long before Einstein and modern physics. But in the 106 years since Einstein, the prevailing view in physics has been that time serves as the fourth ...
Apr 14, 2012 |
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Why we've got the cosmological constant all wrong
(PhysOrg.com) -- Some scientists call the cosmological constant the "worst prediction of physics." And when today’s theories give an estimated value that is about 120 orders of magnitude larger than the ...
Mar 05, 2012 |
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Students discover millisecond pulsar, help in the search for gravitational waves
A special project to search for pulsars has bagged the first student discovery of a millisecond pulsar – a super-fast spinning star, and this one rotates about 324 times per second. The Pulsar Search ...
Space & Earth / Space Exploration
Jan 31, 2012 |
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Krawczynski group receives NASA grant to spy on black holes
(PhysOrg.com) -- Henric Krawczynski, PhD, professor of physics in Arts & Sciences at Washington University in St. Louis, is a big-game hunter of the astrophysical variety — he hunts celestial beasts, ...
Space & Earth / Space Exploration
Jan 06, 2012 |
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A 40-year-old puzzle of superstring theory solved by supercomputer
A group of three researchers from KEK, Shizuoka University and Osaka University has for the first time revealed the way our universe was born with 3 spatial dimensions from 10-dimensional superstring theory in which spacetime ...
Dec 23, 2011 |
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The future cometh: Science, technology and humanity at Singularity Summit 2011 (Part II)
(PhysOrg.com) -- In its essence, technology can be seen as our perpetually evolving attempt to extend our sensorimotor cortex into physical reality: From the earliest spears and boomerangs augmenting our arms, horses and ...
Dec 02, 2011 |
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Listening to the stars
It is almost night on the island of Puerto Rico. Astronomer Joanna Rankin raises her head toward the sky. A few of the brightest stars shine through blue cracks in a ragged dome of gray clouds. To her back, ...
Dec 01, 2011 |
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Four reasons why the quantum vacuum may explain dark matter
(PhysOrg.com) -- Earlier this year, PhysOrg reported on a new idea that suggested that gravitational charges in the quantum vacuum could provide an alternative to dark matter. The idea rests on the hypothesis that particles ...
Nov 28, 2011 |
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List of search results for spacetime
