http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Back in 2006, PAMELA (a Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) was launched with the purpose of detecting cosmic radiation and looking for clues pointing to dark matter. And now it's possible that PAMELA might have already spotted dark matter. http://www.physorg.com/news170436249.html Physics Tue, 25 Aug 2009 16:24:43 EST news170436249 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. http://www.physorg.com/news157814632.html Physics Wed, 01 Apr 2009 14:24:17 EST news157814632 (PhysOrg.com) -- For years, many physicists have accepted that dark matter is composed of weakly interacting massive particles (WIMPs). The fact that WIMPs can naturally explain the amount of dark matter in the universe - left over from the Big Bang - has been described as the `WIMP miracle.` http://www.physorg.com/news148316483.html Physics Fri, 12 Dec 2008 15:01:23 EST news148316483 It's the biggest problem in physics: the matter we can see in the universe accounts for just five per cent of the observed gravity that holds galaxies together. http://www.physorg.com/news177230113.html Physics Thu, 12 Nov 2009 06:35:57 EST news177230113 (PhysOrg.com) -- Stars, the most familiar objects in the night sky, make up only a tiny percentage of the total amount of matter in the universe -- about 2%. http://www.physorg.com/news176122887.html Space & Earth Fri, 30 Oct 2009 12:02:34 EST news176122887 (PhysOrg.com) -- No one knows exactly what a `fifth force` might be, but studies have shown that, if a long-range fifth force does exist, it could have surprising effects on the universe`s structure formation. A fifth force could reduce discrepancies between theory and observation in several areas of cosmology. http://www.physorg.com/news157292373.html Physics Thu, 26 Mar 2009 13:20:41 EST news157292373 Among the most astounding, unexpected, and important achievements of the past century (or even more) have been the discoveries of dark matter and dark energy, collectively dubbed the "dark sector." http://www.physorg.com/news171640779.html Physics Tue, 08 Sep 2009 15:00:37 EST news171640779 (PhysOrg.com) -- An international team of astronomers have found an unexpected link between mysterious 'dark matter' and the visible stars and gas in galaxies that could revolutionise our current understanding of gravity. http://www.physorg.com/news174056210.html Space & Earth Tue, 06 Oct 2009 14:30:01 EST news174056210 Peering into the tumultuous heart of the nearby Perseus galaxy cluster, Hubble discovered a large population of small galaxies that have remained intact while larger galaxies around them are being ripped apart by the gravitational tug of other galaxies. http://www.physorg.com/news156075674.html Space & Earth Thu, 12 Mar 2009 11:21:35 EST news156075674 (PhysOrg.com) -- An international team of scientists predict that our Galaxy, the Milky Way, contains a disk of ‘dark matter`. In a paper published in Monthly Notices of the Royal Astronomical Society, astronomers Dr Justin Read, Professor George Lake and Oscar Agertz of the University of Zurich, and Dr Victor Debattista of the University of Central Lancashire use the results of a supercomputer simulation to deduce the presence of this disk. They explain how it could allow physicists to directly detect and identify the nature of dark matter for the first time. http://www.physorg.com/news140762748.html Physics Tue, 16 Sep 2008 05:45:48 EST news140762748 (PhysOrg.com) -- Several research projects are underway to try to detect particles that may make up the mysterious `dark matter` believed to dominate the universe`s mass. But the existing detectors have a problem: They also pick up particles of ordinary matter - hurtling neutrons that masquerade as the elusive dark-matter particles the instruments are designed to find. http://www.physorg.com/news148131822.html Physics Wed, 10 Dec 2008 11:43:42 EST news148131822 The search for a mysterious substance which makes up most of the Universe could soon be at an end, according to new research. http://www.physorg.com/news145110386.html Physics Wed, 05 Nov 2008 12:26:26 EST news145110386 (PhysOrg.com) -- "In many ways, the standard model of cosmology works very well," Jose Cembranos tells PhysOrg. "However, there are very basic features that we just do not know. We have dark energy and dark matter. They dictate the evolution of late time cosmology. They both together constitute more than 95 percent of the energy content of the present Universe." If this is the case, why do we trust the standard model? It can`t explain such a large portion of the universe. http://www.physorg.com/news159444907.html Physics Mon, 20 Apr 2009 11:17:07 EST news159444907 (PhysOrg.com) -- The Milky Way, like many other galaxies, is thought to be embedded in massive, lumpy amounts of dark matter that release gamma rays and other emissions. Although at first these emissions seem too faint to detect, recent observations have shown that they may be stronger than previously thought. In a new study, scientists have developed a model that predicts that gamma rays from hundreds of dark matter clumps should be detectable by the Fermi satellite that was launched in June 2008. http://www.physorg.com/news169121408.html Physics Mon, 10 Aug 2009 11:10:36 EST news169121408 (PhysOrg.com) -- The images, produced by scientists at Durham University's Institute for Computational Cosmology, show the "Cosmic Dawn" - the formation of the first big galaxies in the Universe. http://www.physorg.com/news153549252.html Space & Earth Wed, 11 Feb 2009 04:34:50 EST news153549252