Ancient star may prove supernova-cosmic ray link

日期:2019-02-26 09:08:14 作者:单于朕 阅读:

A star that died 340,000 years ago has provided fresh evidence that the energetic particles known as cosmic rays are being fired out by supernovae. It is seems likely that a supernova’s shock wave can boost protons to the sort of huge energies found in cosmic rays. Direct evidence for this is hard to find, however,