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  • Cosmic-ray hot spots puzzle researchers - Proton discovery may cast doubt on dark-matter...

    11/29/2008 1:24:32 PM PST · by neverdem · 17 replies · 942+ views
    Nature News ^ | 26 November 2008 | Philip Ball
    Proton discovery may cast doubt on dark-matter theories. The Milagro detector has seen cosmic-ray hot-spots.Milagro / U. Maryland / LANL Hot on the heels of speculation that cosmic rays may have revealed the signature of elusive dark matter in space, new observations could challenge that idea and reinforce an alternative explanation.A seven-year-long experiment at the Milagro cosmic-ray detector near Los Alamos, New Mexico, has revealed 'bright patches' of high-energy cosmic rays in the sky1 – something incompatible with a dark-matter source.Cosmic rays are charged particles, mostly protons and electrons, that are produced in space and generally have a characteristic energy...
  • A Brief History of Intolerance in Modern Cosmology

    01/23/2009 8:11:29 AM PST · by GodGunsGuts · 57 replies · 603+ views
    AiG ^ | January 21, 2009 | Dr. Jerry Bergman
    A Brief History of Intolerance in Modern Cosmology by Dr. Jerry Bergman January 21, 2009 Abstract A review of some recent well-documented cases of intolerance in the cosmology field illustrates a common problem in science. Many relate to the Big Bang theory, such as the case of Geoffrey and Margaret Burbidge and Halton Arp. None of the accounts involved Intelligent Design advocates or creationists. This selection removes this compounding factor from the evaluation, but the cases have direct relevance to both Intelligent Design and creationism because both groups face the same resistance. It was concluded that it is critical for...
  • Mysterious Dark Matter Might Actually Glow

    11/07/2008 3:21:52 PM PST · by SunkenCiv · 9 replies · 594+ views ^ | Thursday, November 6, 2008 | Staff
    Nobody knows what dark matter is, but scientists may now have a clue where to look for it. The strange stuff makes up about 85 percent of the heft of the universe. It's invisible, but researchers know it's there because there is not enough regular matter -- stars and planets and gas and dust -- to hold galaxies and galaxy clusters together. Some other unseen material, dubbed dark matter, must be gluing things together... A new computer simulation of the evolution of a galaxy like our Milky Way suggests it might be possible to observe high-energy gamma-rays given off by...
  • Unknown "Structures" Tugging at Universe, Study Says [ Dark Flow ]

    11/07/2008 3:29:16 PM PST · by SunkenCiv · 73 replies · 1,866+ views
    National Geographic News ^ | November 5, 2008 | John Roach
    Everything in the known universe is said to be racing toward the massive clumps of matter at more than 2 million miles (3.2 million kilometers) an hour -- a movement the researchers have dubbed dark flow. The presence of the extra-universal matter suggests that our universe is part of something bigger -- a multiverse -- and that whatever is out there is very different from the universe we know, according to study leader Alexander Kashlinsky, an astrophysicist at NASA's Goddard Space Flight Center in Maryland... Dark flow was named in a nod to dark energy and dark matter -- two...
  • No Naked Singularity After Black Hole Collision

    10/13/2008 12:28:52 AM PDT · by LibWhacker · 51 replies · 2,240+ views
    AstroEngine ^ | 10/7/08 | Ian O'Neill
    You can manipulate a black hole as much as you like but you’ll never get rid of its event horizon, a new study suggests. This may sound a little odd, the event horizon is what makes the black hole, well… black. However, in the centre of a black hole, hidden deep inside the event horizon, is a singularity. A singularity is a mathematical consequence, it is also a point in space where the laws of physics do not apply. Mathematics also predicts that singularities can exist without an associated event horizon, but this means that we’d be able to physically...
  • High-Speed Crash Makes Hot, 'Sterile' Galaxies

    10/12/2008 3:30:21 PM PDT · by SunkenCiv · 20 replies · 567+ views
    Discovery News ^ | Thursday, October 9, 2008 | Larry O'Hanlon
    A new wider view of two very well-known galaxies has revealed a big surprise: They are connected by faint, starless filaments of hydrogen gas which trace back to a very high-speed intergalactic collision. The smash-up between galaxies M86 and NGC4438 not been suspected before, and may explain why M86, which is visible to the naked eye, is unable to give birth to new stars... During galactic smash-ups stars rarely collide, since there is so much space between them. But gases do slam into gases. The faster the collision, the higher the temperature the gases reach. In the case of M86,...
  • New findings reveal that the shape of the Universe is a Dodecahedron based on Phi

    09/28/2008 12:26:40 PM PDT · by LibWhacker · 52 replies · 1,445+ views
    The standard model of cosmology predicts that the universe is infinite and flat. However, cosmologists in France and the US are now suggesting that space could be finite and shaped like a dodecahedron instead. They claim that a universe with the same shape as the twelve-sided polygon can explain measurements of the cosmic microwave background – the radiation left over from the big bang – that spaces with more mundane shapes cannot.Power spectrum of the cosmic microwave background (CMB) radiation. Data from WMAP have extended the accuracy of the spectrum far beyond what was known from earlier measurements. This plot...
  • Hubble Finds a Mystery Object (something that astronomers cannot make any sense of)

    09/15/2008 11:47:36 AM PDT · by LibWhacker · 142 replies · 1,305+ views
    Don't get the idea that we've found every kind of astronomical object there is in the universe. In a paper to appear in the Astrophysical Journal, astronomers working on the Supernova Cosmology Project report finding a new kind of something that they cannot make any sense of. Now you don't see it, now you do. Something in Bootes truly in the middle of nowhere — apparently not even in a galaxy — brightened by at least 120 times during more than three months and then faded away. Its spectrum was like nothing ever seen, write the discoverers, with "five broad...
  • Amateur astronomer spies gassy "cosmic ghost" ("Hanny's Voorwerp")

    08/05/2008 7:29:54 PM PDT · by NormsRevenge · 14 replies · 179+ views
    Reuters on Yahoo ^ | 8/10/08 | Reuters
    CHICAGO (Reuters) - A Dutch primary school teacher and amateur astronomer has discovered what some are calling a "cosmic ghost," a strange, gaseous object with a hole in the middle that may represent a new class of astronomical object. The teacher, Hanny van Arkel, discovered the object while volunteering in the Galaxy Zoo project, which enlists the help of members of the public to classify galaxies online. "At first, we had no idea what it was. It could have been in our solar system, or at the edge of the universe," Yale University astrophysicist Kevin Schawinski, a member and co-founder...
  • Galaxy Zoo's blue mystery (part I)

    06/20/2008 3:15:43 PM PDT · by neverdem · 5 replies · 146+ views
    Science News ^ | June 19th, 2008 | Janet Raloff
    Colorful Mystery Here's a new, truer-color rendering of the Voorwerp (lower center). Although it looked blue on the Sloan photo, the object actually now appears to be fairly green, observes Keel, who performed spectral analses of the huge mystery cloud.W. Keel Nearly a year ago, astronomers at several universities recruited citizen scientists to help them catalog distant galaxies that had recently been photographed as part of the Sloan Digital Sky Survey. A high-school physics teacher in the Netherlands who was participating in this project, known as Galaxy Zoo, appears to have scored a major coup. She brought a weird blue...
  • Misconceptions about the Big Bang

    02/24/2005 3:54:37 AM PST · by PatrickHenry · 222 replies · 4,346+ views
    Scientific American ^ | March 2005 | Charles H. Lineweaver and Tamara M. Davis
    Baffled by the expansion of the universe? You're not alone. Even astronomers frequently get it wrong. The expansion of the universe may be the most important fact we have ever discovered about our origins. You would not be reading this article if the universe had not expanded. Human beings would not exist. Cold molecular things such as life-forms and terrestrial planets could not have come into existence unless the universe, starting from a hot big bang, had expanded and cooled. The formation of all the structures in the universe, from galaxies and stars to planets and Scientific American articles, has...
  • Predictions, Falsifiability and the Standard Model of Stellar Evolution

    05/26/2008 8:52:58 PM PDT · by Swordmaker · 7 replies · 84+ views ^ | 05/26/2008 | Michel Gmirkin
    An x-ray pulsar pulls matter from its stellar companion. Artistic rendition: NASA/Dana Berry May 26, 2008 Predictions, Falsifiability and the Standard Model of Stellar EvolutionNew information about an odd pair of stars has contradicted the expectations of astronomers and called into question the Standard Model.Several Thunderbolts Pictures of the Day articles have covered the topics of variable stars, neutron stars and magnetars from the standpoints of electrical engineering and plasma physics. Reports have repeatedly demonstrated the surprise and bewilderment exhibited by astronomers at heavenly objects that have defied various theoretical expectations.Now it seems that the discovery of a pulsar...
  • Colossal Flare Erupts from EV Lacertae

    05/23/2008 9:31:06 PM PDT · by Swordmaker · 7 replies · 78+ views Thunderblogs ^ | 05/23/2008 | Stephen Smith
    picture of the day             archive             subject index           Solar flare seen through a hydrogen-alpha filter. Credit: Big Bear Solar Observatory May 23, 2008 Colossal Flare Erupts from EV LacertaeAn explosion thousands of times greater than anything seen on our Sun has been detected bursting from a neighboring star. In a March 19, 2008 press release, NASA officials from the Goddard Space Flight Center announced that their SWIFT satellite detected a stellar flare with x-ray emissions larger than anything they expected to witness from...
  • is Hoag's Object a Dense Plasma Focus?

    05/23/2008 10:21:26 PM PDT · by Swordmaker · 11 replies · 1,083+ views ^ | 05/19/2008 | Stephen Smith
    Hoag’s Object glares balefully across the light-years. Credit: Hubble Heritage May 19, 2008 Is Hoag’s Object a Dense Plasma Focus? What force swept away the stars and formed this 120,000 light-year-wide ring in space? This could be one of electrical energy’s protean forms.There are places in the cosmos where stars form up into ranks that stretch in lines for thousands of light-years. Elsewhere, rings of stars can be found encircling compact structures that have been measured at over 10,000 light-years in diameter.Art Hoag discovered the galaxy that bears his name in 1950 and by conventional redshift-equals-distance calculations, it is approximately...
  • Mira: The Tale of a Giant Star... with a tail

    03/16/2008 2:11:17 AM PDT · by Swordmaker · 6 replies · 368+ views ^ | 03/03/2008 | Stephan Smith
    Credit: NASA/JPL-Caltech Mar 03, 2008Mira: The Tale of a Giant StarThe light-years long plume of ionized gas from this red giant star provides evidence suggesting its electrical nature.NASA launched the Galaxy Evolution Explorer (GALEX) spacecraft on April 28, 2003 from the Cape Canaveral launch facility in southern Florida. Equipped with advanced near and ultraviolet detectors, GALEX was scheduled to remain in orbit for about 29 months studying galaxies in the hundreds of thousands. The mission has been extended and GALEX continues to return images such as the one of Mira, a red-giant star with a trail of material extending from...
  • Rapidly Whirling Black Holes Revealed

    01/10/2008 7:47:48 PM PST · by Aristotelian · 6 replies · 49+ views
    ScienceDaily ^ | Jan. 11, 2008
    A new study using results from NASA's Chandra X-ray Observatory provides one of the best pieces of evidence yet that many supermassive black holes are spinning extremely rapidly. The whirling of these giant black holes drives powerful jets that pump huge amounts of energy into their environment and affects galaxy growth. A team of scientists compared leading theories of jets produced by rotating supermassive black holes with Chandra data. A sampling of nine giant galaxies that exhibit large disturbances in their gaseous atmospheres showed that the central black holes in these galaxies must be spinning at near their maximum rates....
  • Milky Way could hold hundreds of rogue black holes: study

    01/09/2008 3:07:12 PM PST · by NormsRevenge · 14 replies · 191+ views
    AFP on Yahoo ^ | 1/09/08 | AFP
    CHICAGO (AFP) - Hundreds of rogue black holes may be roaming around the Milky Way waiting to engulf stars and planets that cross their path, US astronomers said Wednesday. The astronomers believe these "intermediate mass" black holes are invisible except in rare circumstances and have been spawned by mergers of black holes within globular clusters -- swarms of stars held together by their mutual gravity. These black holes are unlikely to pose a threat to Earth, but may engulf nebulae, stars and planets that stray into their paths, the researchers said. "These rogue black holes are extremely unlikely to do...
  • Biggest black hole in the cosmos discovered (18 billion suns)

    01/10/2008 12:52:18 PM PST · by LibWhacker · 89 replies · 301+ views
    New Scientist ^ | 1/10/08 | David Shiga
    The quasar OJ287 contains two black holes (this slightly dated illustration lists the larger black hole's mass as 17 billion Suns, though researchers now estimate it is 18 billion Suns). The smaller black hole crashes through a disc of material around the larger one twice every orbit, creating bright outbursts (Illustration: VISPA) The most massive known black hole in the universe has been discovered, weighing in with the mass of 18 billion Suns. Observing the orbit of a smaller black hole around this monster has allowed astronomers to test Einstein's theory of general relativity with stronger gravitational fields than ever...
  • Caught on tape: Death star galaxy

    12/17/2007 1:48:05 PM PST · by NormsRevenge · 13 replies · 218+ views
    AP on Yahoo ^ | 12/17/07 | Seth Borenstein - ap
    WASHINGTON - The latest act of senseless violence caught on tape is cosmic in scope: A black hole in a "death star galaxy" blasting a neighboring galaxy with a deadly jet of radiation and energy. A fleet of space and ground telescopes have captured images of this cosmic violence, which people have never witnessed before, according to a new study released Monday by NASA. "It's like a bully, a black-hole bully punching the nose of a passing galaxy," said astrophysicist Neil deGrasse Tyson, director of the Hayden Planetarium in New York, who wasn't involved in the research. But ultimately, this...
  • Ancient Star Nearly as Old as the Universe

    05/11/2007 8:09:45 AM PDT · by Red Badger · 39 replies · 1,347+ views ^ | 05/10/2007 | Ker Than
    Long before our solar system formed and even before the Milky Way assumed its final spiral shape, a star slightly smaller than the Sun blazed into life in our galaxy, formed from the newly scattered remains of the first stars in the universe. Employing techniques similar to those used to date archeological remains here on Earth, scientists have learned that a metal-poor star in our Milky Way called HE 1523 is 13.2 billion years old-just slightly younger than 13.7 billion year age of the universe. Our solar system is estimated to be only about 4.6 billion years old. The findings...