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Keyword: stringtheory

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  • The Nebula Awards for 2008 (science fiction)

    04/29/2009 1:11:10 PM PDT · by EveningStar · 21 replies · 821+ views
    The Nebula Awards ^ | April 25, 2009
    2008 Nebula Awards
  • Space Explosion Is Farthest Thing Ever Seen (gamma-ray burst about 13 billion light-years away)

    04/28/2009 8:54:57 AM PDT · by NormsRevenge · 52 replies · 1,608+ views
    A stellar explosion has smashed the record for most distant object in the known universe. The gamma-ray burst came from about 13 billion light-years away, and represents a relic from when the universe was just 630 million years old. "It easily surpassed the most distant galaxies and quasars," said Edo Berger, an astrophysicist at Harvard University and a leading member of the team that first demonstrated the burst's origin. "In fact, it showed that we can use these spectacular events to pinpoint the first generation of stars and galaxies." "The burst most likely arose from the explosion of a massive...
  • James Webb Space Telescope First Flight Mirror Completes Cryogenic Testing

    04/10/2009 7:10:43 AM PDT · by alnitak · 9 replies · 340+ views
    Science Daily ^ | Apr 10, 2009 | Unknown
    The first mirror segment that will fly on the James Webb Space Telescope, built by Northrop Grumman Corporation, has completed its first series of cryogenic temperature tests in the X-ray and Cryogenic Facility at the Marshall Space Flight Center in Huntsville, Ala. ... Engineers will measure how the mirror changes shape going from room temperature to cryogenic (frigid) temperatures, as the metal expands and contracts. They can model these changes to some extent, but not perfectly. The mirrors will be polished to about 100 nanometers (a human hair is approximately 60,000 to 120,000 nanometers) accuracy at room temperature, based on...
  • New Mystery from Cosmic Dawn: The Blob

    04/22/2009 4:33:54 PM PDT · by LibWhacker · 7 replies · 612+ views
    Universe Today ^ | April 22nd, 2009 | Anne Minard
    This image of the Himiko object is a composite and in false color. The bar at the lower right represents 10,000 light years. Credit: M. Ouchi et al. This mysterious, giant object existed at a time when the universe was only about 800 million years old. It stretches for 55 thousand light years, a record for that early point in time. Its length is comparable to the radius of the Milky Way’s disk. Besides being a great candidate for a future “Where in the Universe Challenge,” what is it? In general, objects such as this one are dubbed extended...
  • Stephen Hawking hospitalized, reported very ill

    04/20/2009 9:27:14 AM PDT · by NormsRevenge · 78 replies · 5,372+ views
    AP on Yahoo ^ | 4/20/09 | Robert Barr - ap
    LONDON – Famed mathematician Stephen Hawking was rushed to a hospital Monday and was seriously ill, Cambridge University said. ... Hawking, 67, gained renown for his work on black holes, and has remained active despite being diagnosed at 21 with ALS, (amyotrophic lateral sclerosis), an incurable degenerative disorder also known as Lou Gehrig's disease.
  • Thieving dwarves cause supernovae

    04/14/2009 11:31:14 AM PDT · by decimon · 15 replies · 474+ views
    BBC ^ | Apr 14, 2009 | Unknown
    Researchers have come up with a theory for how stars can end in a spectacular so-called Type Ia supernova in less than 100 million years.While such early-stage supernovae are well-known, theory has been unable to explain them. The secret, the researchers say, is that white dwarf stars steal mass from nearby "helium stars" until they have enough mass to initiate a supernova.
  • Black Hole Creates Spectacular Light Show (HST-1, enigmatic blob in the center of the M87 galaxy)

    04/14/2009 10:37:20 AM PDT · by NormsRevenge · 27 replies · 1,048+ views
    Space.com on Yahoo ^ | 4/14/09 | Clara Moskowitz
    A jet of gas spewing from a huge black hole has mysteriously brightened, flaring to 90 times its normal glow. For seven years the Hubble Space Telescope has been watching the jet, which pours out of the supermassive black hole in the center of the M87 galaxy. It has photographed the strange phenomenon fading and then brightening, with a peak that even outshines M87's brilliant core. Scientists have dubbed the enigmatic bright blob HST-1, and are so far at a loss to explain its weird behavior. "I did not expect the jet in M87 or any other jet powered by...
  • Strings Link the Ultracold with the Superhot - Perfect liquids suggest theory’s math mirrors...

    04/14/2009 10:05:38 AM PDT · by neverdem · 22 replies · 1,033+ views
    Science News ^ | April 25th, 2009 | Tom Siegfried
    Perfect liquids suggest theory’s math mirrors something real Shadows live in a simple world. They glide effortlessly across any sort of surface, oblivious to the higher dimension of space in which 3-D bodies move, collide and sometimes block the paths of rays of light. Shadows have no idea how important that third dimension is, and how objects in it endow those very shadows with their quasi-physical existence. Indeed, the laws of shadow physics all depend on the third dimension’s presence. And just as the clueless inhabitants of the shadow world require an extra dimension to explain how they exist and...
  • The Multiverse Problem

    04/11/2009 9:31:41 PM PDT · by LibWhacker · 13 replies · 1,047+ views
    Seed Magazine ^ | 3/30/09 | Nathan Schneider
    Is theoretical physics becoming the next battleground in the culture wars? Not according to some theologians and scientists.People have long sought after a theory of everything, even when they had nothing but their five senses as tools of measurement. In the 6th century BCE Thales asserted that all matter is made of water; Anaximenes responded that itÂ’s all air. Parmenides a century later concluded with exacting proofs that everything we see is an illusion and that reality really consists of a single, unchanging sphere. Today, scientists are once again looking beyond the pale of measurable time and space to answer...
  • Quantum lasers: Half light, half matter

    04/08/2009 2:16:42 PM PDT · by LibWhacker · 24 replies · 653+ views
    New Scientist ^ | 4/7/09 | Richard Webb
    A new kind of laser could mean cheaper gadgets for allLasers might be pushing 50, but they are still the youthful pin-ups of fundamental physics. Since the first one was unveiled in 1960, the more apocalyptic predictions of how they might be used - as death rays, for example - have proved to be overblown. Their peaceful application, on the other hand, can be seen everywhere from cutting and welding to combating cancer and cataracts, to powering telecoms and consumer electronics, and has mushroomed into an industry worth $6 billion in 2007. Advances in the laser lab translate into gadgets...
  • Gravity satellite feels the force ( It's up and working,...says the BBC)

    04/06/2009 5:03:52 PM PDT · by Ernest_at_the_Beach · 10 replies · 466+ views
    BBC ^ | Monday, 6 April 2009 00:07 UK 23:07 GMT, | Jonathan Amos Science reporter, BBC News
    Europe's innovative Goce satellite has switched on the super-sensitive instrument that will make ultra-fine measurements of Earth's gravity. The sophisticated gradiometer will feel the subtle variations in Earth's tug as it sweeps around the globe. The spacecraft has also fired up the British-built engine that will help maintain its orbit. Goce needs tiny but continuous levels of thrust to keep it stable and prevent it from falling out of the sky. European Space Agency (Esa) mission manager Rune Floberghagen said all systems on the spacecraft had now been activated following the launch from Russia last month.
  • Astronomers: Dark Matter Guides Universe's Structure

    04/05/2009 12:46:41 PM PDT · by BuckeyeTexan · 31 replies · 1,223+ views
    Information Week ^ | 04/05/2009 | Bob Evans
    A 10-year study of 100,000 galaxies close to our own offers compelling proof that long-hypothesized "dark matter" does exist and is in fact a guiding force behind the structure of the universe, a team of Australian, British, and American astronomers revealed this week. Saying that "the universe we see is really quite structured," one of the lead researchers explained that the 10-year "census" of galaxies near our own Milky Way offers powerful evidence that this invisible dark matter "seems to hold the galaxies together." The dark matter's influence on galaxies "stops their constituent stars from flying off and it seems...
  • Life, the Universe, and Einstein: Shaking up the Cosmos ( 2005 article )

    04/05/2009 10:41:09 AM PDT · by Ernest_at_the_Beach · 17 replies · 1,035+ views
    DUKE Magazine ^ | July-August 2005 | Robert J. Bliwise
    In this centennial year of Albert Einstein's revolutionary theories of space, time, and gravity, humanities scholars say that his influence extended far beyond science. Time is a nebulous thing, except maybe for lunchtime. That's a lesson from The Hitchhiker's Guide to the Galaxy, the science-fiction romp by Douglas Adams that was thrown into Hollywood's Infinite Improba bility Drive and emerged as an early-summer movie hit. Consider the elaborately imagined history of the Guide itself, and of its various editors. We learn that one Lig Lury Jr., hired by a publishing consortium operating from a chunk of celestial real estate called...
  • St. Olaf wins Rube Goldberg Competition

    04/02/2009 9:41:56 AM PDT · by WOBBLY BOB · 2 replies · 534+ views
    city pages ^ | 4-1-09 | Bradley Campbell
    Lutherans sure love screwing with bulbs. Especially ones at St. Olaf College. The dynamic minds won the national Rube Goldberg competition. This is seriously the coolest science competition in the nation. All those years playing Mouse Trap don't compare to the video you are about to see. Watch the video on their website.
  • Dark matter: Physicists may have found telltale

    04/01/2009 2:34:24 PM PDT · by NormsRevenge · 25 replies · 983+ views
    AFP on Yahoo ^ | 4/1/09 | AFP
    PARIS (AFP) – European astronomers said on Wednesday that an anomalous energy signal detected by an orbiting satellite could be a telltale of the enigmatic substance known as dark matter. The researchers, in a study appearing in the British journal Nature, say the hunch is that they picked up a signature of this strange phenomenon, but more work is needed. Some years ago, astrophysicists calculating the amount of matter in the Universe arrived at the startling discovery that ordinary material -- atoms -- comprises perhaps as little as five percent of the stuff in the cosmos. The rest, they believe,...
  • Could nanomachines give friction the slip?

    03/28/2009 12:08:25 AM PDT · by neverdem · 4 replies · 620+ views
    Nature News ^ | 25 March 2009 | Philip Ball
    The quantum stickiness between very close surfaces produces no drag when they move, researchers claim.The 'sticky' Casimir force can even be repulsive.Jay Penni and Federico Capasso The quantum-mechanical effect that makes objects stick together when they are very close produces no friction when the objects are moving, two physicists claim. The results suggest that the operation of nanoscale machinery might not be as sticky a problem as feared. It's long been thought that the 'Casimir force', which pulls together two objects when they are much less than a hair's breadth apart, will create a drag force when the objects move....
  • Geometer wins maths 'Nobel' - Abel prize awarded to Mikhail Leonidovich Gromov.

    03/27/2009 11:17:59 PM PDT · by neverdem · 9 replies · 637+ views
    Nature News ^ | 26 March 2009 | Lucas Laursen
    A French-Russian mathematician has won the Abel Prize today for his work on advanced forms of geometry. The winner of the 6 million Norwegian kroner (US$920,000) prize, Mikhail Leonidovich Gromov, has held a permanent appointment at the Institute of Advanced Scientific Studies (IHES) outside Paris since 1982. The Abel committee cited Gromov specifically for his contributions to three sub-disciplines of modern geometry: the study of Riemannian space, symplectic geometry, and groups of polynomial growth. Gromov is "renowned among mathematicians for his original approach", says Ian Stewart, a mathematician at the University of Warwick in Coventry. Among other things, modern geometers...
  • Clinton poet Josie Kearns releases two new collections [Clinton, MI]

    03/26/2009 5:53:46 PM PDT · by SunkenCiv · 5 replies · 182+ views
    Tecumseh Herald ^ | Thursday, March 26, 2009 | Cristina Trapani-Scott
    ...Clinton poet Josie Kearns... has released... a full length collection called The Theory of Everything... The Theory of Everything, released by Mayapple Press, pulls seven years of work together in 43 poems that are derived from Kearns's own interest in quantum physics and string theory. Kearns said she attended a lecture given by physicist Alan Lightman, author of Einstein's Dreams among other books, and his discussion got her thinking about how the things in everyday life are interconnected. This is hardly the physics we all grew up with, however. For Kearns, the poetics of physics provides the basis for exploration...
  • 'Cold Fusion' Rebirth? New Evidence For Existence Of Controversial Energy Source

    03/23/2009 12:42:14 PM PDT · by FlameThrower · 36 replies · 1,770+ views
    Science Daily ^ | Mar. 23, 2009 | American Chemical Society
    ScienceDaily (Mar. 23, 2009) — Researchers are reporting compelling new scientific evidence for the existence of low-energy nuclear reactions (LENR), the process once called "cold fusion" that may promise a new source of energy.
  • The Conyers bill is back [restricting access to research we paid for]

    02/14/2009 6:44:09 AM PST · by antiRepublicrat · 18 replies · 874+ views
    Open Access News ^ | February 04, 2009 | Staff
    Yesterday Rep. John Conyers (D-MI) re-introduced the Fair Copyright in Research Works Act.  This year it's H.R. 801 (last year it was H.R. 6845), and co-sponsored by Steve Cohen (D-TN), Trent Franks (R-AZ), Darrell Issa (R-CA), and Robert Wexler (D-FL).  The language has not changed.  The Fair Copyright Act is to fair copyright what the Patriot Act was to patriotism.  It would repeal the OA policy at the NIH and prevent similar OA policies at any federal agency.  The bill has been referred to the House Judiciary Committee, where Conyers is Chairman, and where he has consolidated his power...