Assertion: astronomer | /r/CapableOf | study black holes
Facets:
Source sentences:
text: Some astronomers study distant stars, galaxies, and phenomena such as neutron stars and black holes, and others monitor space debris that could interfere with satellite operations.
text: For example, they may study planets, stars, galaxies, asteroids, black holes, and other celestial bodies.
text: Some astronomers study distant stars, galaxies, and phenomena such as neutron stars and black holes, and others monitor space debris that could interfere with satellite operations.