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Dutroux und der Fall N. (ZDF) [Hard Info 05] - YouTube
https://www.youtube.com/watch?v=fxJjwzziSaY
Quelle: ZDF | Quelldatum: 01.03.2004
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Black Holes and Galaxies: Professor Reinhard Genzel - YouTube
https://www.youtube.com/watch?v=ZDxFjq-scvU
Evidence has been accumulating for several decades that many galaxies harbor central mass concentrations that may be in the form of black holes with masses b...