Tuesday, December 21, 2010
Italian satellite may find evidence of dark matter particles annihilate.
<P> Keywords: space dark matter </ P> <P> Beijing on April 6, according to U.S. space network reported that, in theory, dark matter Ruopi destroyed, will leave a series of strange particles. .Now, scientists say they may have found the traces of dark matter remains. .The discovery or help prove the existence of dark matter, revealing the composition of dark matter. .</ P> <P> important basic physics found </ P> <P> So far, no one knows what dark matter is actually matter, but scientists think dark matter exists is because substances from the visible .not sufficient to explain the gravitational galaxy rotation. .One known as PAMELA (anti-matter - matter detection and load light nuclei Astrophysics) satellite has found the Italian excessive positron particles. .Positron is the antiparticle of electrons, also known as positron. .PAMELA launch in 2006, to measure the radiation in space objects. .</ P> <P> this electronic signal is generated may have a variety of sources, a leading candidate for dark matter. .About 98% of the material universe is this elusive substance. .When two dark matter particles collide, they sometimes die, releasing an energy, including positron. .The mission's chief scientist 佩尔基奥基 Opie Riza (Piergiorgio Picozza) in told SPACE.com said: "PAMELA found more than expected positron. Many people believe that this may be the dark matter signal .Because Jiuzheng electronic, this behavior is very consistent with many theoretical dark matter. "</ P> <P> if the findings were eventually confirmed, in fact, not entirely beyond the scientists by surprise, but I am afraid .raised in the scientific community a great response. .The results will be published in the latest issue of "Nature" magazine. .University of Michigan astrophysicist Gordon Kane (Gordon Kane), said: "Over the past two decades, the dark matter of the signal has been seen as a potentially important marker, PAMELA mission scientists could see the long-awaited .the kind of material. It is very likely that the field of fundamental physics for decades the most important discovery. "Kane was not involved in the latest research. .</ P> <P> important evidence of the existence of dark matter </ P> <P> Typically, when the cosmic rays and the gas between the stars and dust in the interaction between the atoms, the positron will be generated. .However, this apparently does not have discovered that PAMELA positron excess. .Another possibility is that, PAMELA positron was discovered by a known short-period pulsar with a pulse of radiation produced by stars. .</ P> <P> want to make this distinction between choice and dark matter, the need for more data, either from the PAMELA, was launched last year, Fermi Gamma-ray Space Telescope. .Pei Lizha said: "We hope that the dark matter really, but now we need more experiments to support." </ P> <P> Even so, some scientists still very excited about the existence of dark matter may be found. .30 years since the 20th century, scientists proposed the theory of dark matter may exist in the universe has been filled with the substance of mystery. .Kane suggested, the results has not yet been confirmed, but it is not only important evidence of the existence of dark matter, but also provides such an important clue to mystery of matter. .</ P>.
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