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) -- A star's spectacular death in the constellation Taurus was observed on Earth as the supernova of 1054 A.D. http://www.physorg.com/news178220365.html Space & Earth Mon, 23 Nov 2009 17:40:06 EST news178220365 (PhysOrg.com) -- Astrophysicists at the University of Warwick and Kiel University have discovered two earth sized bodies with oxygen rich atmospheres - however there is a bit of a disappointing snag for anyone looking for a potential home for alien life, or even a future home for ourselves, as they are not planets but are actually two unusual white dwarf stars. http://www.physorg.com/news177258394.html Space & Earth Thu, 12 Nov 2009 14:27:33 EST news177258394 (PhysOrg.com) -- Evidence for a thin veil of carbon has been found on the neutron star in the Cassiopeia A supernova remnant. This discovery, made with NASA's Chandra X-ray Observatory, resolves a ten-year mystery surrounding this object. http://www.physorg.com/news176567767.html Space & Earth Wed, 04 Nov 2009 14:37:05 EST news176567767 (PhysOrg.com) -- Research by Michigan State University scientists has shed new light on the properties of neutron stars, galactic oddities that are formed when a large star runs out of fuel and collapses. http://www.physorg.com/news176409161.html Physics Mon, 02 Nov 2009 18:33:35 EST news176409161 (PhysOrg.com) -- Gamma-rays are the most energetic known form of electromagnetic radiation, with each gamma ray being at least one hundred thousand times more energetic than an optical light photon. The most potent gamma rays, the so-called VHE (very high energy) gamma rays, pack energies a billion times this, or even more. Astronomers think that VHE gamma rays are produced in the environment of the winds or jets of the compact, ultra-dense remnant ashes of massive stars left behind from supernova explosions. http://www.physorg.com/news173104115.html Space & Earth Fri, 25 Sep 2009 13:29:49 EST news173104115 (PhysOrg.com) -- A West Virginia high-school student analyzing data from a giant radio telescope has discovered a new astronomical object -- a strange type of neutron star called a rotating radio transient. http://www.physorg.com/news172860368.html Space & Earth Tue, 22 Sep 2009 17:49:46 EST news172860368 (PhysOrg.com) -- Scientists at the Naval Research Laboratory Space Science Division and a team of international researchers have positively identified cosmic sources of gamma-ray emissions through the discovery of 16 pulsating neutron stars. http://www.physorg.com/news172858253.html Space & Earth Tue, 22 Sep 2009 17:12:47 EST news172858253 (PhysOrg.com) -- A dramatic new vista of the center of the Milky Way galaxy from NASA's Chandra X-ray Observatory exposes new levels of the complexity and intrigue in the Galactic center. The mosaic of 88 Chandra pointings represents a freeze-frame of the spectacle of stellar evolution, from bright young stars to black holes, in a crowded, hostile environment dominated by a central, supermassive black hole. http://www.physorg.com/news172837903.html Space & Earth Tue, 22 Sep 2009 11:33:13 EST news172837903 Scientists at the Naval Research Laboratory (NRL) Space Science Division and a team of international researchers have positively identified cosmic sources of gamma-ray emissions through the discovery of 16 pulsating neutron stars. Using the Large Area Telescope (LAT), the primary instrument on NASA's Fermi Gamma-ray Space Telescope satellite, the discoveries were made by conducting blind frequency searches on the sparse photon data provided by the LAT. http://www.physorg.com/news171714615.html Space & Earth Wed, 09 Sep 2009 11:40:02 EST news171714615 Trapping and cooling a microscopic clump of gas and then suddenly releasing it would normally result in the gas rapidly expanding outward in all directions, like a spherical bubble. http://www.physorg.com/news168629014.html Physics Tue, 04 Aug 2009 18:25:10 EST news168629014 (PhysOrg.com) -- An astrophysics experiment in America has demonstrated how fundamental research in one subject area can have a profound effect on work in another as the instruments used for the Laser Interferometer Gravitational-Wave Observatory (LIGO) pave the way for quantum experiments on a macroscopic scale. http://www.physorg.com/news166941860.html Physics Thu, 16 Jul 2009 05:45:09 EST news166941860 This beautiful image gives a new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth. The curved, light blue ridge running down the center of the image shows X-ray data from the Chandra X-ray Observatory. http://www.physorg.com/news166371617.html Space & Earth Thu, 09 Jul 2009 15:21:24 EST news166371617 (PhysOrg.com) -- A new class of pulsars detected by NASA's Fermi Gamma-ray Space Telescope is solving the mystery of previously unidentified gamma-ray sources and helping scientists understand the mechanisms behind pulsar emissions. http://www.physorg.com/news165763241.html Space & Earth Thu, 02 Jul 2009 14:21:48 EST news165763241 Astronomers at the University of California, Santa Cruz, have developed a new technique to determine the ages of millisecond pulsars, the fastest-spinning stars in the universe. http://www.physorg.com/news163781369.html Space & Earth Tue, 09 Jun 2009 15:50:13 EST news163781369 The colossal stellar explosions called supernovae come in many kinds and flavours. Some of them are produced when a massive star reaches the end of its life in a sudden gravitational collapse. Astronomers have just found one of these explosions that defies the current classification scheme. The results of this research have been published in Nature, and Calar Alto has contributed to this discovery. http://www.physorg.com/news163397750.html Space & Earth Fri, 05 Jun 2009 05:16:41 EST news163397750 (PhysOrg.com) -- Neutron stars have the potential to play an important role in understanding some of the mysteries of the universe. One of factors that could help lead to an understanding of gravitational waves and the mechanisms involved in giant flares in magnetars is the strength of the crust that forms on the outside of a neutron star. In an effort to better understand the neutron star crusts, Charles Horowitz, at Indiana University in Bloomington, and his colleague Kai Kadau, at Los Alamos National Laboratory in New Mexico, have used molecular dynamics to model neutron stars and come up with improved estimates of the breaking strain. http://www.physorg.com/news162561360.html Physics Tue, 26 May 2009 12:56:45 EST news162561360 (PhysOrg.com) -- For the first time, researchers have observed a singular cosmic act of rebirth: the transformation of an ordinary, slow-rotating pulsar into a superfast millisecond pulsar with an almost infinitely extended lifespan. http://www.physorg.com/news162134312.html Space & Earth Thu, 21 May 2009 14:19:34 EST news162134312 (PhysOrg.com) -- Research by a theoretical physicist at Indiana University shows that the crusts of neutron stars are 10 billion times stronger than steel or any other of the earth's strongest metal alloys. http://www.physorg.com/news160827120.html Space & Earth Wed, 06 May 2009 11:12:28 EST news160827120 (PhysOrg.com) -- Something in our galactic neighborhood seems to be producing large numbers of high-energy electrons, according to new data gathered by the Fermi Gamma-ray Space Telescope. The electrons could be coming from nearby pulsars -or they could be a longed-for signal of dark matter, the elusive, invisible material thought to make up nearly a quarter of the universe. http://www.physorg.com/news160764898.html Physics Tue, 05 May 2009 17:56:20 EST news160764898 (PhysOrg.com) -- NASA's Swift satellite and an international team of astronomers have found a gamma-ray burst from a star that died when the universe was only 630 million years old, or less than five percent of its present age. The event, dubbed GRB 090423, is the most distant cosmic explosion ever seen. http://www.physorg.com/news160143442.html Space & Earth Tue, 28 Apr 2009 13:17:50 EST news160143442 Einstein@Home, based at the University of Wisconsin--Milwaukee (UWM) and the Albert Einstein Institute (AEI) in Germany, is one of the world's largest public volunteer distributed computing projects. More than 200,000 people have signed up for the project and donated time on their computers to search gravitational wave data for signals from unknown pulsars. http://www.physorg.com/news157113935.html Space & Earth Tue, 24 Mar 2009 11:45:58 EST news157113935 This composite image of the Medusa galaxy (also known as NGC 4194) shows X-ray data from NASA's Chandra X-ray Observatory in blue and optical light from the Hubble Space Telescope in orange. Located above the center of the galaxy and seen in the optical data, the "hair" of the Medusa -- made of snakes in the Greek myth -- is a tidal tail formed by a collision between galaxies. The bright X-ray source found towards the left side of Medusa's hair is a black hole. http://www.physorg.com/news156014933.html Space & Earth Wed, 11 Mar 2009 18:29:45 EST news156014933 (PhysOrg.com) -- The oldest isolated pulsar ever detected in X-rays has been found with NASA's Chandra X-ray Observatory. This very old and exotic object turns out to be surprisingly active. http://www.physorg.com/news154871702.html Space & Earth Thu, 26 Feb 2009 11:55:52 EST news154871702 (PhysOrg.com) -- XMM-Newton has caught the fading glow of a tiny celestial object, revealing its rotation rate for the first time. The new information confirms this particular object as one of an extremely rare class of stellar zombie - each one the dead heart of a star that refuses to die. http://www.physorg.com/news151064499.html Space & Earth Tue, 13 Jan 2009 10:21:39 EST news151064499 For decades it was baffling. Out of the still night sky, astronomers peering through their telescopes would occasionally glimpse quick bursts of high-energy light popping off like flashbulbs at the far side of the universe. http://www.physorg.com/news143816869.html Space & Earth Tue, 21 Oct 2008 14:07:49 EST news143816869 About three times a second, a 10,000-year-old stellar corpse sweeps a beam of gamma-rays toward Earth. This object, known as a pulsar, is the first one known to "blink" only in gamma rays, and was discovered by the Large Area Telescope (LAT) onboard NASA's Fermi Gamma-ray Space Telescope, a collaboration with the U.S. Department of Energy (DOE) and international partners. http://www.physorg.com/news143382903.html Space & Earth Thu, 16 Oct 2008 13:35:03 EST news143382903