Assertion: cosmic ray | /r/HasProperty | created on cosmic timescale
Facets:
value: fairly recently
type: TEMPORAL
Source sentences:
text: This is only a small fraction of the age of the Galaxy or the universe, so cosmic rays must have been created fairly recently on a cosmic timescale.
text: This is only a small fraction of the age of the Galaxy or the universe, so cosmic rays must have been created fairly recently on a cosmic timescale.
text: This is only a small fraction of the age of the Galaxy or the universe, so cosmic rays must have been created fairly recently on a cosmic timescale.