Assertion: primary cosmic ray | /r/HasAspect | energy
Facets:
value: in the billions of electron volts
type: OTHER
value: typically
type: DEGREE
Source sentences:
text: Primary cosmic rays typically have energies that measure in the billions of electron volts (abbreviated eV).
text: If the primary cosmic ray that started the cascade has energy over 500 MeV, some of its secondary byproducts (including neutrons) will reach ground level where they can be detected by neutron monitors.