HOW many universes are there? Cosmologists Andrei Linde and Vitaly Vanchurin at Stanford University in California calculate that the number . . . of universes. . . may depend on the human brain.

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The Constant: Un-Answered Questions. The Variable: X = The Unknown

From: Wired issue 15.02 "What we don't know" 1.) What's at Earth's Core?

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We don't have any trouble coping with three dimensions – or four at a pinch. The 3D world of solid objects and limitless space is something we accept with scarcely a second thought. Time, the fourth dimension, gets a little trickier.

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ON THE night of 30 June 2005, the sky high above La Palma in Spain's Canary Islands crackled with streaks of blue light too faint for humans to see. Atop the Roque de los Muchachos, the highest point of the island, though, a powerful magic eye was waiting and watching.

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Many cosmological theories not only see our universe as one of many but also claim that time does not exist. Lee Smolin argues against the timeless multiverse......

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String Theorist Brian Greene Answers Your Questions June 02, 2009 By Heather QuinlanThe World Science Festival is becoming one of New York's hottest tickets.

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STRING theory: you love it or loathe it. To some it represents our best hope for a route to a "theory of everything"; others portray it as anything from a mathematically obtuse minefield to a quasi-religion that has precious little to do with science.

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For the first time, superstring theorists can point to a place where their formulas help other physicists understand something they can see in their experiments.

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THERE is nothing certain in this world, US founding father Benjamin Franklin once wrote, except death and taxes. As a scientist, he might have added a third inescapable force: gravity, the unseen hand that keeps our feet on the ground.

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What do some of the coldest gasses and hottest plasmas have in common? String theory may help model why they seem to behave as quantum liquids.

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The detection of extra dimensions beyond the familiar four—the three dimensions of space and one of time—would be among the most earth-shattering discoveries in the history of physics.

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The one component of the standard model that remains stubbornly unconfirmed is the very notion of the Higgs' "molasses" field. More Articles

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Though scientists don't yet know what dark matter is, it's probably in the room with you right now.

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Great video on the LHC and what it does - also, an amusing article on how the LHC hasn't ended the world yet.

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On the Fringe: String Theory

It all started with Newton.

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Lisi believed that he had discovered what physicists call a Theory of Everything—a unifying idea that aims to incorporate all the universe's forces in a single mathematical framework.

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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 the possibility of an extra dimension.

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Borrowing some of the mathematics that string theorists invented to plumb the secrets of the physical universe, he has found a way to represent the universe of all possible musical chords in graphic form. "He's not the first to try," says Yale music theorist Richard Cohn.

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OOPS !! And we were so sure about the LAWS of gravity, and Einsteins theories. The observable facts don't match now, and no neat plausable explanation in sight.

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Maverick cosmologists contend that what we think of as the moment of creation was simply part of an infinite cycle of titanic collisions between our universe and a parallel world

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This models a small region of the observable universe right after strings have formed, at around 10^{-36} sec, when the distances between them were still only a few times their thickness. Credit: Mark Hindmarsh

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controversial new study indicates that there are traces of vast cosmic strings left over in radiation from the early universe. If indeed confirmed to be real, these cosmic strings would offer an unprecedented window into the extreme physics of origins of the universe.

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A theory of everything (ToE) is a hypothetical theory of theoretical physics that fully explains and links together all known physical phenomena.

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According to [string theory], certain vibrations of the strings explain large-scale forces such as gravity, now governed by relativity. Other vibrations explain atoms and other small particles, now covered by quantum mechanics.

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An impoverished surfer has drawn up a new theory of the universe, seen by some as the Holy Grail of physics, which as received rave reviews from scientists.

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