# Cross section for neutrino energies between 6.3 TeV and 980 TeV measured by IceCube

The new measurement determines the cross section for neutrino energies between 6.3 TeV and 980 TeV, energy levels more than an order of magnitude higher than previous measurements.

Photo: Martin Wolf/ IceCube NSF

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# HAWC sheds new light on origin of mysterious antimatter excess

By catching and counting particles of light streaming forth from these nearby stellar engines, the HAWC Collaboration has showed that these two pulsars are very unlikely to be the origin of the excessdespite being the right age and the right distance from Earth to contribute. Positrons from these sources simply haven’t spread far enough to reach Earth in sufficient numbers. The results are published today in Science.

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