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Published May 26, 2009 Astrophysics Cosmology Particles & Fields Detectors buried beneath the Antarctic ice place stringent limits on the presence of dark matter particles, called neutralinos, in the sun. |
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Published February 23, 2009 Two antimatter measurements performed by the PAMELA experiment appear to lead to conflicting results. Now, theorists are exploring the extent to which these measurements can be reconciled. |
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Published February 9, 2009 Interactions between dark matter particles may explain unusual matter-antimatter production rates in the universe. |
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Published December 22, 2008 Mounting evidence seems to rule out weakly interacting massive particles (WIMPs ) as the source of a so-far unexplained signal in the DAMA/LIBRA experiments. |
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Published November 3, 2008 At the current time, we cannot tell if Einstein’s cosmological constant—or some other theory—is the correct description for dark energy in the Universe. A proposed measure based on existing data may help us to better distinguish these ideas. |
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