Pages tagged cosmology:

Our world may be a giant hologram - space - 15 January 2009 - New Scientist
http://www.newscientist.com/article/mg20126911.300-our-world-may-be-a-giant-hologram.html?full=true&print=true

According to Hogan, a physicist at Fermilab, GEO600 has stumbled upon the fundamental limit of space-time - the point where space-time stops behaving like the smooth continuum Einstein described and instead dissolves into "grains", just as a newspaper photograph dissolves into dots as you zoom in. "It looks like GEO600 is being buffeted by the microscopic quantum convulsions of space-time." If this doesn't blow your socks off, then Hogan has an even bigger shock in store: "If the GEO600 result is what I suspect it is, then we are all living in a giant cosmic hologram."
"GEO600 has stumbled upon the fundamental limit of space-time - the point where space-time stops behaving like the smooth continuum Einstein described and instead dissolves into 'grains', just as a newspaper photograph dissolves into dots as you zoom in."
Our world may be a giant hologram - space - 15 January 2009 - New Scientist
http://www.newscientist.com/article/mg20126911.300-our-world-may-be-a-giant-hologram.html?DCMP=OTC-rss&nsref=online-news
Superb article on Space
article from New Scientist about the world being a hologram
According to Craig Hogan, a physicist at the Fermilab particle physics lab in Batavia, Illinois, GEO600 has stumbled upon the fundamental limit of space-time - the point where space-time stops behaving like the smooth continuum Einstein described and instead dissolves into "grains", just as a newspaper photograph dissolves into dots as you zoom in. (..) If this doesn't blow your socks off, then Hogan, who has just been appointed director of Fermilab's Center for Particle Astrophysics, has an even bigger shock in store: "If the GEO600 result is what I suspect it is, then we are all living in a giant cosmic hologram."
A noise floor found in very small measurements means that our entire universe could be holographic. If true, this could have wide-ranging applications in space exploration, physics, computer science, philosophy, and other fields.
"The idea that we live in a hologram probably sounds absurd, but it is a natural extension of our best understanding of black holes, and something with a pretty firm theoretical footing. It has also been surprisingly helpful for physicists wrestling with theories of how the universe works at its most fundamental level."
20 Things You Didn't Know About... Time | Cosmology | DISCOVER Magazine
http://discovermagazine.com/2009/mar/20-things-you-didn.t-know-about-time?=rssfeed
The Biocentric Universe Theory: Life Creates Time, Space, and the Cosmos Itself | Cosmology | DISCOVER Magazine
http://discovermagazine.com/2009/may/01-the-biocentric-universe-life-creates-time-space-cosmos
A great article. Every thing is perception. i beleive in it
Review of Biocentrism in the Discover magazine
The farther we peer into space, the more we realize that the nature of the universe cannot be understood fully by inspecting spiral galaxies or watching distant supernovas. It lies deeper. It involves our very selves.
What Is Time? One Physicist Hunts for the Ultimate Theory | Wired Science | Wired.com
http://www.wired.com/wiredscience/2010/02/what-is-time/
Sean Carroll
A cool look at why we view the world we do and why certain actions can't be reversed.
Big Bang or Big Bounce?: New Theory on the Universe's Birth: Scientific American
http://www.sciam.com/article.cfm?id=big-bang-or-big-bounce
Our universe may have started not with a big bang but with a big bounce—an implosion that triggered an explosion, all driven by exotic quantum-gravitational effects
Did our cosmos exist before the big bang? - space - 10 December 2008 - New Scientist
http://www.newscientist.com/article/mg20026861.500-did-our-cosmos-exist-before-the-big-bang.html?full=true
LQC is in fact the first tangible application of another theory called loop quantum gravity, which cunningly combines Einstein's theory of gravity with quantum mechanics. Theories like this work out what happens when microscopic volumes experience an extreme gravitational force, as happened near the big bang, for example. Ashtekar rewrote the equations of general relativity in a quantum-mechanical framework. ABHAY ASHTEKAR saw the universe bounce back while watching a simulation of the universe rewind towards the big bang. Mostly the universe behaved as expected, becoming smaller and denser as the galaxies converged. But then, instead of reaching the big bang "singularity", the universe bounced and started expanding again. The theory that the recycled universe was based on, called loop quantum cosmology (LQC), had managed to illuminate the very birth of the universe - something even Einstein's general theory of relativity fails to do.
"Ashtekar later used this framework to show that the fabric of space-time is woven from loops of gravitational field lines."
Did our cosmos exist before the big bang
Loop Quantum Cosmology posits a different beginning to the universe.