Assertion: universe's object | /r/HasProperty | a neutron star
Facets:
Source sentences:
text: This object may be a neutron star that contains approximately the mass of two Suns condensed into a sphere only about 20 km (12 mi) across, or alternatively an even more compact black hole, a collapsed star whose gravity is so strong that not even light can escape from it.
text: Star explosions can also give rise to incredibly dense objects called neutron stars.