Assertion: supermassive black hole | /r/AtLocation | the center of galaxies
Facets:
value: more often
type: DEGREE
Source sentences:
text: Supermassive black holes are found more often at the center of galaxies, and some scientists think this type of black hole was formed at the same time the galaxy was formed.
text: Supermassive black holes, many millions of times the mass of our Sun, are of more mysterious origin, and are found at the centre of galaxies.