US EditionAstrogeo: How Do You Find a Black Hole?
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How do you observe something invisible? In this episode, Franzi tells us how researchers discovered the first black hole — a bright X-ray source called Cygnus X-1.
Published on: 09.10.2025 05:30Author: Karl UrbanHow to observe something invisible? In this podcast episode, Franzi tells how to discover the first black hole – an X-ray source in the constellation Schwan. It's about why the evidence was waiting so long and why Stephen Hawking lost a bet in the end.
For AstroGeo we regularly research a whole story. Only if you support us financially, the podcast remains free of charge. Thank you! Depending on the mass, stars end their development in different ways. A star like our sun – rather small, rather yellow – ends up as a white dwarf. Massier stars, on the other hand, turn into neutron stars, the densest formations in the universe. Only the most massive stars are reserved for the most spectacular fat…
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