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Keyword: stringtheory

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  • Scientists Map the ["inferred"] Dark Matter Around Millions of Galaxies

    04/17/2015 2:15:22 PM PDT · by BenLurkin · 27 replies
    universetoday.com ^ | Ramin Skibba
    The research and maps, which span a large area of the sky, are the product of a massive effort of an international team from the US, UK, Spain, Germany, Switzerland, and Brazil. They announced their new results at the American Physical Society (APS) meeting in Baltimore, Maryland. According to cosmologists, dark matter particles stream and clump together over time in particular regions of the cosmos, often in the same places where galaxies form and cluster. Over time, a “cosmic web” develops across the universe. Though dark matter is invisible, it expands with the universe and feels the pull of gravity....
  • Accelerating universe? Not so fast

    04/12/2015 9:14:56 AM PDT · by LibWhacker · 10 replies
    Eurekalert ^ | 4/10/15
    Certain types of supernovae, or exploding stars, are more diverse than previously thought, a University of Arizona-led team of astronomers has discovered. The results, reported in two papers published in the Astrophysical Journal, have implications for big cosmological questions, such as how fast the universe has been expanding since the Big Bang. Most importantly, the findings hint at the possibility that the acceleration of the expansion of the universe might not be quite as fast as textbooks say. The team, led by UA astronomer Peter A. Milne, discovered that type Ia supernovae, which have been considered so uniform that cosmologists...
  • Black holes don't erase information, scientists say

    04/04/2015 10:19:42 AM PDT · by Red Badger · 37 replies
    Phys.Org ^ | by Charlotte Hsu
    The "information loss paradox" in black holes—a problem that has plagued physics for nearly 40 years—may not exist. Shred a document, and you can piece it back together. Burn a book, and you could theoretically do the same. But send information into a black hole, and it's lost forever. That's what some physicists have argued for years: That black holes are the ultimate vaults, entities that suck in information and then evaporate without leaving behind any clues as to what they once contained. But new research shows that this perspective may not be correct. "According to our work, information isn't...
  • Frustrated magnets - Hall Effect clues to their discontent

    04/03/2015 5:40:51 PM PDT · by BenLurkin · 21 replies
    An experiment conducted has revealed an unlikely behavior in a class of materials called frustrated magnets, addressing a long-debated question about the nature of these discontented quantum materials. The researchers tested the frustrated magnets -- so-named because they should be magnetic at low temperatures but aren't -- to see if they exhibit a behavior called the Hall Effect. When a magnetic field is applied to an electric current flowing in a conductor such as a copper ribbon, the current deflects to one side of the ribbon. This deflection, first observed in 1879 by E.H. Hall, is used today in sensors...
  • The Koyal Group Info Mag on Unusual square ice discovered

    04/02/2015 1:27:54 AM PDT · by oceaneerb · 18 replies
    Koyal Group Info Mag ^ | March 31, 2015 | Oceane Erb
    The surprising discovery of "square ice" which forms at room temperature was made by an international team of researchers last week. The study was published in Nature by a team of scientists from UK and Germany led by Andre Geim of University of Manchester and G. Algara-Siller of University of Ulm. The accompanying review article was done by Alan Soper of Rutherford Appleton Laboratory in UK. "We didn't expect to find square ice ... We found there is something strange in terms of water going through [nanochannels]. It's going too fast. And you can't explain that by just imagining a...
  • Fact or Fiction?: Dark Matter Killed the Dinosaurs

    04/02/2015 10:15:04 PM PDT · by grundle · 58 replies
    Scientific American ^ | March 25, 2015 | Lee Billings
    A new out-of-this-world theory links mass extinctions with exotic astrophysics and galactic architecture Every once in a great while, something almost unspeakable happens to Earth. Some terrible force reaches out and tears the tree of life limb from limb. In a geological instant, countless creatures perish and entire lineages simply cease to exist. The most famous of these mass extinctions happened about 66 million years ago, when the dinosaurs died out in the planet-wide environmental disruption that followed a mountain-sized space rock walloping Earth. We can still see the scar from the impact today as a nearly 200-kilometer-wide crater in...
  • LHC restart: 'Experimental' current blast fixes glitch

    03/31/2015 6:00:26 PM PDT · by BenLurkin · 9 replies
    bbc ^ | Jonathan Webb
    The short circuit delaying the restart of the Large Hadron Collider has been fixed, after a blast of high current melted the metal particle responsible. It is now likely that the LHC will see beams of protons racing around its 27km circumference early next week. The massive machine's second run, after a two-year refit, had faced a delay of up to several weeks after the glitch was discovered ten days ago. But now only much more routine tests remain to be completed. Cern, the European organisation for nuclear research, announced on Tuesday that Run Two of the collider was "back...
  • Raytheon Engineers Reveal how Technology Will Detect Alien Spaceships

    03/29/2015 7:33:55 AM PDT · by BenLurkin · 41 replies
    inventorspot.com ^ | Paul Fitzgerald
    The duo suggests that alien-like ships traveling at relativistic speeds can easily intermingle with photons in the cosmic microwave background, which is dubbed CMB. This means that a spacecraft traveling at near light speed would leave a unique signature, and this means it would therefore be fully discoverable. Their research, which was just published in this month's MIT Technology Review, points out that the interaction with photons in the CMB “should create a drag that imposes specific limits on how fast spacecraft can travel.” And, “it should also produce a unique signature of relativistic spaceflight that ought to be visible...
  • Scientists aiming to redefine the kilogram

    03/28/2015 1:24:25 AM PDT · by Olog-hai · 59 replies
    TheLocal.de ^ | 27 Mar 2015 17:59 GMT+01:00 | Matty Edwards
    The German Nation Metrology Institute (PTB) in Braunschweig has set itself the enormous task of finding a new formula for measuring a kilogram. The weight is currently based on a metal cylinder called the International Prototype Kilogram that is kept in a safe in Paris. The problem is that the precious object is—very gradually—losing weight, according to scientists. […] A race is now underway between scientists around the world to find a way of defining an unchangeable kilogram without relying on a lump of metal, which is unsurprisingly rather complicated. Researchers at the PTB in Braunschweig claim to be very...
  • Dark matter is apparently ‘darker’ than we thought

    03/27/2015 8:14:51 PM PDT · by BenLurkin · 48 replies
    WaPo ^ | Rachel Feltman
    A new study published Thursday in Science suggests that dark matter might be able to zip through the universe without slowing or dragging because particles of it don't even interact with each other. Based on what we can observe about the universe, galaxies should be tearing themselves apart. That's where so-called dark matter comes in: It's a term for the as-of-yet unobserved matter that must be bulking up cosmos, giving galaxies the gravity they need to spin at the rates they do without falling to pieces. But even though we haven't caught dark matter (so named because it doesn't interact...
  • Collapse of the universe coming sooner than expected according to new research

    03/27/2015 12:33:56 PM PDT · by SunkenCiv · 129 replies
    AOL ^ | March 26th 2015 | unattributed
    You've heard of the Big Bang, but what about the "Colossal Crash?" Get ready, because it might be coming sooner than you think ... relatively speaking. In a paper published in Physical Review Letters a group of physicists have theorized a mechanism for "cosmological collapse" which predicts the universe will at some point stop expanding and then collapse back onto itself, destroying us and pretty much all matter. The idea has been floating around the scientific community in one form or another for a while now, but the latest paper is noteworthy because its numbers and models suggest that collapse...
  • Massive Black Hole Stumps Researchers

    06/28/2004 7:03:25 PM PDT · by PeaceBeWithYou · 72 replies · 449+ views
    Space.com ^ | June 28, 2004 | Tariq Malik
    A team of astronomers have found a colossal black hole so ancient, they're not sure how it had enough time to grow to its current size, about 10 billion times the mass of the Sun. Sitting at the heart of a distant galaxy, the black hole appears to be about 12.7 billion years old, which means it formed just one billion years after the universe began and is one of the oldest supermassive black holes ever known. The black hole, researchers said, is big enough to hold 1,000 of our own Solar Systems and weighs about as much as...
  • The Big Bang and the Big Question: A Universe without God?

    06/23/2003 11:31:49 AM PDT · by yonif · 325 replies · 2,737+ views
    Aish ^ | Lawrence Kelemen
    http://www.aish.com/societywork/sciencenature/The_Big_Bang_and_the_Big_Question_A_Universe_without_God$.asp The Big Bang and the Big Question: A Universe without God? by Lawrence Kelemen The history of scientific search for the origins of the Universe gives us permission to believe in God. Until the early twentieth century, astronomers entertained three possible models of the universe:1. The universe could be static.According to this theory, though the mutual gravitational attractions of stars and planets might hold them together in the form of solar systems and galaxies, each of these stellar-terrestrial groups slide through space along its own random trajectory, unrelated to the courses tracked by other groups of stars and...
  • "Runaway Universe" May Collapse In 10 Billion Years, New Studies Predict

    09/17/2002 10:50:04 AM PDT · by sourcery · 82 replies · 591+ views
    The recent discovery that the universe is expanding at an ever-increasing rate has led many astronomers to forecast a dark and lonely future for our galaxy. According to some predictions, the rapidly accelerating universe will cause all galaxies to run away from each other until they are no longer visible. In this widely accepted scenario, our own Milky Way will become an isolated island adrift in a sea of totally black space 150 billion years from now. But two new studies by Stanford University cosmologists suggest that it may be time to rethink this popular view of a "runaway universe."...
  • The Universe Might Last Forever, Astronomers Say, but Life Might Not

    01/07/2002 9:02:39 PM PST · by Senator Pardek · 18 replies · 630+ views
    New York Times ^ | Jan. 8 2001 | DENNIS OVERBYE
    In the decades that astronomers have debated the fate of the expanding universe — whether it will all end one day in a big crunch, or whether the galaxies will sail apart forever — aficionados of eternal expansion have always been braced by its seemingly endless possibilities for development and evolution. As the Yale cosmologist Dr. Beatrice Tinsley once wrote, "I think I am tied to the idea of expanding forever." Life and intelligence could sustain themselves indefinitely in such a universe, even as the stars winked out and the galaxies were all swallowed by black holes, Dr. Freeman Dyson, ...
  • CERN Large Hadron Collider restarts with redoubled energy

    03/22/2015 7:10:57 PM PDT · by jonatron · 24 replies
    Deutsche Welle ^ | 3/12/2015 | Tatiana Ivanova
    At the end of March, the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) will be up and running after a remodeling break of over two years. Physicists said on Thursday they hoped it would open the door to an even deeper understanding of our universe, now that the accelerator has twice the energy as before. "We are all very excited," CERN director Rolf-Dieter Heuer said at the opening of a press conference on Thursday, adding that the accelator would be reactivated during the final week of March, pending final tests. Since its initial launch in...
  • The World's Biggest Physics Experiment is about to Reboot

    03/20/2015 7:28:27 AM PDT · by EBH · 51 replies
    Gizmodo ^ | 3/20/2015 | Jaime Condliffe
    The Large Hadron Collider (LHC) is the most audacious physics experiment in human history. Now scientists are about to restart the giant particle collider for a new set of experiments. Last time, they did the almost-impossible and found the Higgs Boson. This time, they might find something even more exciting. Back in 2008, just nine days into its first run of experiments, there was a significant incident at the Large Hadron Collider. A faulty electrical connection between two magnets stopped superconducting, then melted and caused serious mechanical damage to the facility. The accident delayed use of the LHC for six...
  • Mathematicians Chase Moonshine’s Shadow

    03/13/2015 6:10:51 AM PDT · by LibWhacker · 17 replies
    Quanta Magazine ^ | 3/12/15 | Erica Klarreich
    Mathematicians Chase Moonshine’s Shadow Researchers are on the trail of a mysterious connection between number theory, algebra and string theory. In 1978, the mathematician John McKay noticed what seemed like an odd coincidence. He had been studying the different ways of representing the structure of a mysterious entity called the monster group, a gargantuan algebraic object that, mathematicians believed, captured a new kind of symmetry. Mathematicians weren’t sure that the monster group actually existed, but they knew that if it did exist, it acted in special ways in particular dimensions, the first two of which were 1 and 196,883.McKay, of...
  • How Do We Know Dark Matter Exists?

    03/12/2015 10:32:02 AM PDT · by BenLurkin · 46 replies
    universetoday.com ^ | Fraser Cain
    Now, you might be saying, if we don’t know what this thing is, and we can’t detect it. How do we know it’s actually there? Isn’t it probably not there, like dragons? How do we know dark matter actually exists, when we have no idea what it actually is? Oh, it’s there. In fact, pretty much all we know is that it does exist. Dark matter was first theorized back in the 1930s by Fritz Zwicky to account for the movement of galaxy clusters, but the modern calculations were made by Vera Rubin in the 1960s and 70s. She calculated...
  • Astronomy Picture of the Day -- Galaxy and Cluster Create Four Images of Distant Supernova

    03/09/2015 3:04:25 AM PDT · by SunkenCiv · 21 replies
    NASA ^ | March 09, 2015 | (see photo credit)
    Explanation: What are the unusual spots surrounding that galaxy? They are all images of the same supernova. For the first time, a single supernova explosion has been seen split into multiple images by the gravitational lens deflections of intervening masses. In this case the masses are a large galaxy and its home galaxy cluster. The featured image was captured last November by the Earth-orbiting Hubble Space Telescope. The yellow-hued quadruply-imaged Supernova Refsdal occurred in the early universe far behind the cluster. Measuring the locations and time-delays between the supernova images should allow astrophysicists to recover the amount of dark matter...
  • Does Dark Matter Originate From Higgs Boson? New Theory To Be Tested At CERN's LHC

    03/07/2015 10:57:00 AM PST · by BenLurkin · 24 replies
    ibtimes.com ^ | Avaneesh Pandey 
    Dark matter has long remained one of the greatest unsolved mysteries of the universe. While its presence can be inferred from the gravitational pull it exerts on visible matter, the fact that it does not emit or absorb any radiation makes it next to impossible to detect. ... The new model put forward by a team headed by Christoffer Petersson, a theoretical particle physicist from Chalmers University of Technology in Sweden, suggests that the Higgs boson, discovered by the LHC in 2012, might be responsible for the birth of dark matter particles. According to this model, if supersymmetry is real,...
  • Einstein put to the test: Satellite mission on dark energy and theory of gravitation

    03/06/2015 2:12:49 AM PST · by samtheman · 16 replies
    http://www.sciencedaily.com/ ^ | March 5, 2015 | Heidelberg University
    Physicists have gained new insights into dark energy and the theory of gravitation by analyzing data from the "Planck" satellite mission of the European Space Agency (ESA). Their results demonstrate that the standard model of cosmology remains an excellent description of the universe. Yet when the Planck data is combined with other astronomical observations, several deviations emerge. Further studies must determine whether these anomalies are due to measurement uncertainties or undiscovered physical correlations, which would also challenge Einstein's theory of gravitation. Thus, the analysis of the Planck data gives major impetus for research during future space missions.
  • The first ever photograph of light as both a particle and wave

    03/02/2015 12:52:37 PM PST · by C19fan · 28 replies
    Light behaves both as a particle and as a wave. Since the days of Einstein, scientists have been trying to directly observe both of these aspects of light at the same time. Now, scientists at EPFL have succeeded in capturing the first-ever snapshot of this dual behavior. Quantum mechanics tells us that light can behave simultaneously as a particle or a wave. However, there has never been an experiment able to capture both natures of light at the same time; the closest we have come is seeing either wave or particle, but always at different times. Taking a radically different...
  • Black hole 12bn times more massive than sun is discovered

    02/28/2015 10:32:14 AM PST · by Ernest_at_the_Beach · 60 replies
    theguardian.com ^ | Feb 25, 2015 | Press Association
    Scientists name new ‘object’ SDSS J0100+2802 and say it is 12.8bn light years from Earth and was formed just 900m years after the Big Bang *************************************************************A monster black hole powering “the brightest lighthouse in the distant universe” has been discovered that is 12bn times more massive than the sun, scientists have revealed.The extraordinary object is at the centre of a quasar - an intensely powerful galactic radiation source - with a million billion times the sun’s energy output.For years the nature of quasars, discovered in 1963, remained a mystery. Today scientists believe they are generated by matter heating up as...
  • Quantum Equations Suggest Big Bang Never Happened

    02/26/2015 11:50:10 AM PST · by Mount Athos · 73 replies
    iflscience ^ | February 10, 2015 | Stephen Luntz
    Two physicists are trying to revive one of the great debates of twentieth-century science, arguing that the Big Bang may never have happened. Their work presents a radically different vision of the universe from the one cosmologists now work with. "The Big Bang singularity is the most serious problem of general relativity because the laws of physics appear to break down there," says Dr. Ahmed Farag Ali of Benha University, Egypt. In collaboration with Professor Saurya Das of the University of Lethbridge, Canada, Ali has created a series of equations that describe a universe much like Hoyle's; one without a...
  • Monster Black Hole Is the Largest and Brightest Ever Found

    02/26/2015 5:24:51 AM PST · by C19fan · 27 replies
    Space.com ^ | February 25, 2015 | Charles Q. Choi
    Astronomers have discovered the largest and most luminous black hole ever seen — an ancient monster with a mass about 12 billion times that of the sun — that dates back to when the universe was less than 1 billion years old. It remains a mystery how black holes could have grown so huge in such a relatively brief time after the dawn of the universe, researchers say.
  • What to Expect Next from the World’s Largest Particle Accelerator

    02/22/2015 1:07:49 PM PST · by BenLurkin · 17 replies
    Overall, the consensus among the panelists: the LHC’s second run will produce more data to refine the Standard Model—the theory that describes subatomic particles and the forces that dictate their behavior. This refinement is needed, said Heinemann, because there are still fundamental physics questions the Standard Model can’t address. Questions remain about gravity (Why is it so weak?); antimatter (Why is there so little of it?); and dark matter, the mysterious and invisible substance that makes up nearly a quarter of the universe (What particle might be responsible?).
  • Infinity Is a Beautiful Concept – And It’s Ruining Physics

    02/20/2015 6:01:20 PM PST · by LibWhacker · 94 replies
    Discover Magazine ^ | 2/20/15 | Max Tegmark
    Infinity Is a Beautiful Concept – And It’s Ruining Physics By Max Tegmark | February 20, 2015 9:00 am I was seduced by infinity at an early age. Georg Cantor’s diagonality proof that some infinities are bigger than others mesmerized me, and his infinite hierarchy of infinities blew my mind. The assumption that something truly infinite exists in nature underlies every physics course I’ve ever taught at MIT—and, indeed, all of modern physics. But it’s an untested assumption, which begs the question: Is it actually true?A Crisis in Physics There are in fact two separate assumptions: “infinitely big” and “infinitely...
  • Do atoms understand language?

    02/19/2015 2:23:41 PM PST · by Reverend Saltine · 49 replies
    Jon Rappoport's Blog ^ | February 18, 2015 | Jon Rappoport
    Do atoms understand language? Are you your brain and nothing else? If so, mind-control programming is quite reasonable by Jon Rappoport February 19, 2015 NoMoreFakeNews.com “The idea that somewhere in all the stacked-up universes, there might be a little corner that isn’t made out of matter or energy, but is truly independent of, and different from, sub-atomic particles… this idea confounds people, as if it might mean the end of all existence. It might mean a return to the old myths and fairy tales of the horrific priest-classes. It might mean everything science knows will vanish in a puff of...
  • ‘Lopsided’ Supernova Could Be Responsible for Rogue Hypervelocity Stars

    02/10/2015 9:15:24 AM PST · by BenLurkin · 20 replies
    universetoday.com ^ | Dan Majaess
    Hypervelocity stars have been observed traversing the Galaxy at extreme velocities (700 km/s), but the mechanisms that give rise to such phenomena are still debated. Astronomer Thomas M. Tauris argues that lopsided supernova explosions can eject lower-mass Solar stars from the Galaxy at speeds up to 1280 km/s. “[This mechanism] can account for the majority (if not all) of the detected G/K-dwarf hypervelocity candidates,” he said. Several mechanisms have been proposed as the source for hypervelocity stars, and the hypotheses can vary as a function of stellar type. A simplified summary of the hypothesis Tauris favors begins with a higher-mass...
  • Another ‘settled science’ topic is not so settled after all – Big Bang theory questioned

    02/10/2015 10:47:12 PM PST · by Ernest_at_the_Beach · 78 replies
    wattsupwiththat.com ^ | February 10, 2015 | Anthony Watts
    We’ve all heard of the claim of “settled science” when it comes to global warming/climate change, and we’ve all heard of the “Big Bang Theory”, and I’m not just talking about the popular TV show. The scientific theory goes all the way back to 1927. This is an artist’s concept of the metric expansion of space, where space (including hypothetical non-observable portions of the universe) is represented at each time by the circular sections. Note on the left the dramatic expansion (not to scale) occurring in the inflationary epoch, and at the center the expansion acceleration. The scheme is decorated...
  • The world's most accurate clock: Scientists create way of measuring time [truncated]

    02/10/2015 5:53:09 AM PST · by C19fan · 27 replies
    UK Daily Mail ^ | February 9, 2015 | Richard Gray
    A clock that is so accurate it will lose just one second in 16 billion years has been created by scientists. The device, made using super-cooled atoms held within a lattice of laser beams, is around 1,000 times more precise than the atomic clocks currently used to define time. Researchers say clocks with this level of accuracy could open up new areas of science by allowing tiny changes fluctuations in the strength of gravity to be measured.
  • Refuting The Laws of Physics, Part 1 of 2

    02/01/2015 12:04:38 PM PST · by Kaslin · 19 replies
    Townhall.com ^ | February 1, 2015 | Mark Baisley
    I count myself among the many astrogeeks who (1) keep track of where all the visible planets are and who (2) hold a considered opinion regarding whether Pluto should have been downgraded from full planet status. (BTW, yes, Pluto deserves the demotion to dwarf planet; not just because it is even smaller than the dwarf planet Eris, but also because Pluto can’t walk upright like Goofy). This month provides particularly interesting evenings for stargazers. Five planets — Mars, Neptune, Venus, Uranus, and Mercury — are all bunched up within a few degrees of each other from the perspective of Earth....
  • Refuting The Laws of Physics, Part 2 of 2

    02/09/2015 6:23:56 AM PST · by Kaslin · 44 replies
    Townhall.com ^ | February 9, 2015 | Mark Baisley
    Last month, I was invited to deliver the keynote address to a gathering of local Republican leaders at one of those pricey fundraising dinners. I knew that for thirty minutes, I would have the uninterrupted attention of an impressive gathering of involved conservatives and elected officials, including two United States Congressmen seated right up front. I did not want to spend that rare circumstance on temporal matters like encouraging a “Yes” vote to approve the Keystone Pipeline. Plus, I felt an obligation to deliver a speech that would seem worthy of $150 per plate. So after investing much thought, I...
  • Don’t look at Black Holes Too Closely, They Might Disappear

    02/06/2015 1:33:13 PM PST · by BenLurkin · 16 replies
    universetoday.com ^ | Vanessa Janek
    Thanks to Einstein’s theory of special relativity, we can all agree that the speed of light is constant for all observers. We can also agree that, if you’re not a photon, approaching light speed comes with some pretty funky rules – namely, anyone watching you will see your length compress and your watch slow down. But the slowing of time also occurs near gravitationally potent objects, which are described by general relativity. So if you happen to be sight-seeing in the center of the Milky Way and you make the regrettable decision to get too close to our supermassive black...
  • An Odd Hypothesis About Bubbles Could Finally Lead to Nuclear Fusion

    01/31/2015 12:59:03 AM PST · by ckilmer · 15 replies
    gizmodo.com ^ | Yesterday 5:45am | Jamie Condliffe
    Nuclear fusion is the dream of energy scientists the world over, because it promises limitless, clean electricity. Most efforts to kickstart the process use high-intensity lasers, insane magnetic field and super-hot hydrogen plasmas. But there may be a more humble alternative. It's called sonofusion, and it involves bubbles.Nuclear fusion is the process through which the cores of atoms, called nuclei, collide to form a new, larger atomic nucleus. When the two nuclei are of a lower mass than iron, the reaction creates energy—lots and lots of energy. For instance, when two hydrogen nuclei smash into each other, they creating...
  • The supersymmetry calamity

    01/31/2015 9:06:49 PM PST · by LibWhacker · 25 replies
    Winnipeg Free Press ^ | 1/31/15 | Colin Gillespie
    Enlarge Image It sounds esoteric, like an episode of The Big Bang Theory, and maybe someday it will be. But even in the fields of physics, supersymmetry is esoteric. What is supersymmetry? What is the calamity? Why should you care?What it is... is an idea: particular superheroes! Here's their story. The standard model is the crown jewel of physics. All you need to know is it describes subatomic particles and the forces that affect them. It has 16 kinds of particles: six quarks, six leptons and four bosons. Lately, headlines tell us add the Higgs. The standard model depicts...
  • Scientists abandon highly publicized claim about cosmic find

    01/31/2015 6:03:42 PM PST · by BenLurkin · 26 replies
    AP ^ | 01/30/2015 2:17 PM
    Scientists who made headlines last March by announcing that they'd found long-sought evidence about the early universe are now abandoning that claim. New data show that their cosmic observations no longer back up that conclusion, they say. The original announcement caused a sensation because it appeared to show evidence that the universe ballooned rapidly a split-second after its birth, in what scientist call cosmic inflation. That idea had been widely believed, but researchers had hoped to bolster it by finding a particular trait in light left over from the very early universe. That signal is what the researchers claimed they...
  • The mystery signal from a galaxy far away:Brief pulse from deep in outer space baffles astronomers

    01/27/2015 3:32:02 AM PST · by Las Vegas Dave · 30 replies
    dailymail.co.uk ^ | Tuesday, Jan 27th 2015 | Mark Prigg
    Is it a message from far beyond out own galaxy? A brief mysterious pulse detected by Arecibo telescope has baffled boffins. The discovery of a split-second burst of radio waves by scientists using the Arecibo radio telescope in Puerto Rico raises major new questions over what caused it. The finding by an international team of astronomers, published July 10 in The Astrophysical Journal, marks the first time that a so-called 'fast radio burst' has been detected using an instrument other than the Parkes radio telescope in Australia.
  • European Professor: E=Mc˛ is "Sexed," Speed of Light is "Privileged"

    01/20/2015 3:34:48 PM PST · by rightistight · 43 replies
    Pundit Press ^ | 1/20/15 | Aurelius
    Dr. Luce Irigaray has presented a philosophical statement that likely no other person has ever even considered: that E=Mc˛, the famed equation by Albert Einstein, is "sexed." Irigaray, who describes herself as a "Feminist Philosopher," wrote her thoughts in the 1987 book Parler n’est jamais neutre. The quote was listed proudly recently by her current employer, The European Graduate School, as a cutting-edge example of their faculty's thinking. The quote itself is as incoherent as it sounds, but we have decided to post it in its entirety below to make certain that all context is given: "Is E=Mc˛ a sexed...
  • In theory, the Milky Way could be a 'galactic transport system' (it could be a huge wormhole!)

    01/22/2015 2:13:28 AM PST · by LibWhacker · 13 replies
    Science Daily ^ | 1/21/15 | Source: Sissa Medialab
    Based on the latest evidence and theories our galaxy could be a huge wormhole (or space-time tunnel, have you seen the movie "Interstellar?") and, if that were true, it would be "stable and navigable." This is the hypothesis put forward in a study published in Annals of Physics and conducted with the participation of SISSA in Trieste. The paper, the result of a collaboration between Indian, Italian and North American researchers, prompts scientists to re-think dark matter. "If we combine the map of the dark matter in the Milky Way with the most recent Big Bang model to explain the...
  • Why wormholes (probably) don’t exist

    01/27/2015 2:09:07 AM PST · by LibWhacker · 24 replies
    Galileo's Pendulum ^ | 1/26/15 | Matthew Francis
    The test rig for the Dark Energy Camera (DECam) at Fermilab. I picked this image today because it kinda sorta looks like the wormhole-making machine from the film version of Contact. [Credit: moi]A lot of science fiction plot devices are devoted to getting around the speed of light. In the real Universe, nothing with mass can travel faster than light, which means we can’t travel to distant stars without taking decades, centuries, or longer in transit. So, sci-fi draws from teleportation, hyperdrive, warp drive, and the ultimate cosmic short-cut: wormholes.[1] In some cases, the source of a science fiction...
  • Particles accelerate without a push (But Newton's not dead)

    01/25/2015 10:48:22 PM PST · by LibWhacker · 8 replies
    MIT News Office ^ | 1/20/15 | David L. Chandler
    New analysis shows a way to self-propel subatomic particles, extend the lifetime of unstable isotopes. David L. Chandler | MIT News Office January 20, 2015 Press Inquiries Some physical principles have been considered immutable since the time of Isaac Newton: Light always travels in straight lines. No physical object can change its speed unless some outside force acts on it. Not so fast, says a new generation of physicists: While the underlying physical laws haven’t changed, new ways of “tricking” those laws to permit seemingly impossible actions have begun to appear. For example, work that began in 2007 proved that...
  • The Paradoxes That Threaten To Tear Modern Cosmology Apart

    01/20/2015 4:43:30 PM PST · by LibWhacker · 99 replies
    Medium ^ | 1/20/15
    Some simple observations about the universe seem to contradict basic physics. Solving these paradoxes could change the way we think about the cosmos Revolutions in science often come from the study of seemingly unresolvable paradoxes. An intense focus on these paradoxes, and their eventual resolution, is a process that has leads to many important breakthroughs. So an interesting exercise is to list the paradoxes associated with current ideas in science. It’s just possible that these paradoxes will lead to the next generation of ideas about the universe. Today, Yurij Baryshev at St Petersburg State University in Russia does just this...
  • Mystery radio bursts from outside the Milky Way baffles astronomers

    05/18/2014 7:00:11 AM PDT · by shove_it · 52 replies
    DailyMail/Drudge ^ | 16 May | JONATHAN O'CALLAGHAN
    ~snip~ In 1967 British astronomer Jocelyn Bell Burnell was left stunned by mysterious pulsing signals she detected coming from outside the solar system. For months she suggested the signals could be of an extraterrestrial intelligent origin, but they were later proven to be rapidly spinning stars known as pulsars. However, a new series of mysterious signals, known as Fast Radio Bursts (FRBs), has again got astronomers scratching their heads and wondering if, maybe, we’re picking up alien messages...
  • The Chameleon in the Vacuum Chamber (physics, dark energy)

    01/14/2015 10:38:37 PM PST · by LibWhacker · 10 replies
    The Chameleon in the Vacuum Chamber A new proposal for an experiment that could test the presence of a fifth force with unprecedented precision. It still amazes me that everything I see is made up of only some few dozen particles and four interactions. For all we know. But maybe this isn’t all there is? Physicists have been speculating for a while now that our universe needs a fifth fundamental force, one responsible for the phenomenon of dark energy, to maintain the observed expansion rate. Although this idea has been around for more than a decade, it has turned...
  • New Evidence For Anthropic Theory That Fundamental Physics Constants Underlie Life-Enabling Universe

    01/16/2015 10:58:49 AM PST · by lbryce · 17 replies
    From Quarks to Quasars ^ | January 16, 2015 | FQIQ
    Full Title:New Evidence For Anthropic Theory That Fundamental Physics Constants Underlie Life-Enabling Universe For nearly half a century, theoretical physicists have made a series of discoveries that certain constants in fundamental physics seem extraordinarily fine-tuned to allow for the emergence of a life-enabling universe. Constants that crisscross the Standard Model of Particle Physics guided the formation of hydrogen nuclei during the Big Bang, along with the carbon and oxygen atoms initially fused at the center of massive first-generation stars that exploded as supernovae; these processes in turn set the stage for solar systems and planets capable of supporting carbon-based life...
  • 'Bent time' tips pulsar out of view

    01/10/2015 2:33:39 PM PST · by moose07 · 53 replies
    BBC ^ | 9 January 2015 | Jonathan Webb
    A pulsar, one of deep space’s spinning “lighthouses”, has faded from view because a warp in space-time tilted its beams away from Earth. The tiny, heavy pulsar is locked in a fiercely tight orbit with another star. The gravity between them is so extreme that it is thought to emit waves and to bend space - making the pulsar wobble. By tracking its motion closely for five years, astronomers determined the pulsar’s weight and also quantified the gravitational disturbance. Then, the pulsar vanished. Its wheeling beams of radio waves now pass us by, and the researchers have calculated that this...
  • Entanglement Makes Quantum Particles Measurably Heavier, Says Quantum Theorist

    01/10/2015 12:41:17 AM PST · by LibWhacker · 11 replies
    medium.com | arXiv.org ^ | 12/12/14 | David Edward Bruschi (orig. paper)
    The discovery is a long sought-after link between the theories of quantum mechanics and general relativityThe two towering achievements of 20th century physics are Einstein’s theory of general relativity and quantum mechanics. Both have fundamentally changed the way we view the universe and our place within it. And yet they are utterly incompatible: quantum mechanics operates on the tiniest scales while relativity operates on the grandest of scales. Never the twain shall meet; although not for lack of trying on the part of several generations of theorists including Einstein himself. Now one theorist has shown that an exotic quantum effect...
  • Atom smasher will renew hunt for strange particles in 2015

    01/01/2015 9:56:19 AM PST · by BenLurkin · 11 replies
    Now, the LHC is set to return in 2015 nearly twice as powerful as its first run from 2010 to 2013. "Doubling the energy will have a huge impact on the search for new particles at LHC," said experimental particle physicist Gabriella Sciolla, of Brandeis University in Waltham, Massachusetts, who works on the ATLAS experiment at the LHC. "The higher the energy, the heavier the particle one can possibly produce."