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Pulsars put new spin on evidence for dark matter

发布时间:2019-03-14 11:10:01来源:未知点击:

By David Shiga EVEN those whose idea this is hope they are wrong – pulsars, rather than dark matter, might be responsible for an usually large number of high-energy particles discovered in space. In August, the team behind the PAMELA satellite reported seeing an excess of positrons – the antimatter equivalent of electrons – zipping around space at high speed. This caused excitement among physicists, who wondered if it could be a signature of dark matter. Although this mysterious substance is thought to make up a large proportion of the universe, so far it has only been detected indirectly,