Assertion: cosmic ray's source | /r/HasProperty | cygnus
Facets:
Source sentences:
text: Some astronomical observations indicate that a principal source of cosmic rays is Cygnus X-3, a distant binary star system near the edge of our galaxy.
text: Other sources could be neutron stars, radio galaxies, X-ray binaries (such as Cygnus X-3), active galactic nuclei (AGNs) and black holes.
text: Other sources could be neutron stars, radio galaxies, X-ray binaries (such as Cygnus X-3), active galactic nuclei (AGNs) and black holes.