All of the stars and planets and other visible matter in the universe only make up about five percent of its mass. Another 20 percent is thought to be mysterious dark matter and the remaining 75 percent to be dark energy, neither of which emit light, nor have ever been conclusively detected by scientists. But today, an international group of researchers reported that they have begun to unravel that mystery using a $1.6 billion instrument located aboard the International Space Station, designed specifically to probe for evidence of dark matter.
via The Verge - All Posts http://www.theverge.com/2013/4/3/4179468/dark-matter-evidence-particles-detected-by-space-station-ams
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