Assertion: high energy proton | /r/HasProperty | detected on earth
Facets:
value: as cosmic rays
type: MANNER
Source sentences:
text: In 2013, the detection of characteristic gamma rays originating from the decay of neutral pions in two supernova remnants has shown that pions are produced copiously after supernovas, most probably in conjunction with production of high energy protons that are detected on Earth as cosmic rays.