Assertion: cosmic ray's origin | /r/CapableOf | lie outside the milky way
Facets:
value: in active galaxies
type: LOCATION
Source sentences:
text: The galactic magnetic field is not strong enough to confine the most energetic primary particles within the Milky Way Galaxy, and there have been suggestions that the origins of these particles lie outside the Milky Way, perhaps in active galaxies powered by supermassive black holes with masses a hundred million times the mass of the Sun.