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Published online 5 May 2009 | Nature | doi:10.1038/news.2009.444
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Dark matter intrigue deepens
Space telescope may have glimpsed hint of mystery particles.
New data from two experiments — one in space, one on a balloon floating above Antarctica — hint at a tantalizing detection of dark matter, the mysterious stuff comprising 85% of the universe's matter. The evidence is a reported excess of high-energy electrons and their antimatter counterparts, positrons, which could be created as dark matter particles annihilate or decay.
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