Assertion: supermassive black hole | /r/CapableOf | live at the hearts of galaxies
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Source sentences:
text: There’s stellar mass black holes, formed from massive stars, and a supermassive black holes which lives at the hearts of galaxies.
text: Supermassive black holes exist in the hearts of galaxies and usually contain the mass equivalent of millions of suns.
text: Supermassive black holes exist at the hearts of many galaxies, including the Milky Way.