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| Tags: article, dark, matter, may, undetectable |
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Dark matter may be undetectable
Super-WIMPs might hide ninety percent of the universe. 8 July 2003 PHILIP BALL Researchers going underground to detect signs of the elusive dark matter thought to far outweigh normal matter in the Universe might be wasting their time, a team of physicists is suggesting. Jonathan Feng and colleagues at the University of California at Irvine propose that dark matter, which is believed to constitute around 90% of all the matter in the Universe, is hiding in the form of particles called super-WIMPs that would evade all conventional dark-matter searches1. Currently, one of the leading suspects for the inexplicable gravitational pull that stars and galaxies experience are WIMPs - weakly interacting massive particles. These are heavy relative to the protons and neutrons that make up atoms, and so have strong gravitational effects. Otherwise they hardly influence normal matter at all. In the hope of detecting very rare collisions between WIMPs and normal particles, physicists in Europe and the USA have set up detectors far beneath the Earth's surface, shielded from cosmic rays. Such efforts might prove fruitless, warns Feng's team. Their proposed super-WIMPs interact so weakly as to be effectively invisible. "Super-WIMPs are impossible to discover directly and escape all indirect detection experiments," they conclude. Read the Rest at Nature Science Update http://www.nature.com/nsu/030707/030707-2.html Comment: when your calculation is wrong, make up an undetectable particle or undetectable matter. Have they forgotten that the universe isn't closed, that we don't need to discover the extra mass and that the Big Bang theory is based on constantly shifting sands. -- Kind Regards, Robert Karl Stonjek. |
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#2
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Robert Karl Stonjek wrote in message ... Dark matter may be undetectable Super-WIMPs might hide ninety percent of the universe. 8 July 2003 PHILIP BALL Researchers going underground to detect signs of the elusive dark matter thought to far outweigh normal matter in the Universe might be wasting their time, a team of physicists is suggesting. Jonathan Feng and colleagues at the University of California at Irvine propose that dark matter, which is believed to constitute around 90% of all the matter in the Universe, is hiding in the form of particles called super-WIMPs that would evade all conventional dark-matter searches1. Currently, one of the leading suspects for the inexplicable gravitational pull that stars and galaxies experience are WIMPs - weakly interacting massive particles. These are heavy relative to the protons and neutrons that make up atoms, and so have strong gravitational effects. Otherwise they hardly influence normal matter at all. In the hope of detecting very rare collisions between WIMPs and normal particles, physicists in Europe and the USA have set up detectors far beneath the Earth's surface, shielded from cosmic rays. Such efforts might prove fruitless, warns Feng's team. Their proposed super-WIMPs interact so weakly as to be effectively invisible. "Super-WIMPs are impossible to discover directly and escape all indirect detection experiments," they conclude. Read the Rest at Nature Science Update http://www.nature.com/nsu/030707/030707-2.html Comment: when your calculation is wrong, make up an undetectable particle or undetectable matter. Have they forgotten that the universe isn't closed, that we don't need to discover the extra mass and that the Big Bang theory is based on constantly shifting sands. Just like the color force that makes quarks undetectable. "What? No quarks come out? Then their binding force must increase without limit, to make the unobservable!" greywolf42 ubi dubium ibi libertas |
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