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Tiny Galaxies Reveal Secrets of Supermassive Black Holes

The Quanta Podcast

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How to Look for Black Hole in Dwarf Galaxies

Researchers have found that 81 galaxies glimmered with the faint orange of damaged iron. In these dwarf galaxies, a giant black hole is heating the gas around it enough to blast electrons from their atoms. The distinct color of the iron tin line makes large black holes pop out against the background.

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