Assertion: gamma ray's origin | /r/HasProperty | understood
Facets:
value: properly
type: DEGREE
value: well
type: DEGREE
Source sentences:
text: The origin of these galactic cosmic rays is not yet well understood, but they seem to be remnants of supernovae and especially gamma-ray bursts (GRB), which feature magnetic fields capable of the huge accelerations measured from these particles.
text: It would take decades before the origins of all these rays were properly understood, but a few years to identify their nature.