Bedtime Astronomy

Millions of Black Holes May Hide in the Milky Way—Why Can’t We Find Them?

Bedtime Astronomy

Show Notes

Millions of black holes may roam the Milky Way undetected, but finding one without a companion is a major challenge.

Astronomers searching Gaia data for isolated black holes within 50 light-years of Earth found candidates that failed follow-up checks using radio and infrared observations. Why are these invisible cosmic objects so difficult to detect, and what will it take to finally find one nearby?

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