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Received 5 March 2021DOI:https://doi.org/10.1103/RevModPhys.94.020501© 2022 Nobel Foundation, Published by the American Physical Society*The 2020 Nobel Prize for Physics was shared by Roger Penrose, Reinhard Genzel, and Andrea Ghez. This paper is the text of the address given in conjunction with the award.Physics Subject Headings (PhySH)Physical SystemsAstronomical black holesGravitation, Cosmology & Astrophysics
R. Genzel (Fri,) studied this question.
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