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General relativity makes very specific predictions about what black holes are and how they should appear, as shown in this simulation.
GODDARD SPACE FLIGHT CENTER/JEREMY SCHNITTMAN
After decades of effort, scientists are finally seeing black holes or are they?
Jan. 7, 2021 , 1:45 PM
While working on his doctorate in theoretical physics in the early 1970s, Saul Teukolsky solved a problem that seemed purely hypothetical. Imagine a black hole, the ghostly knot of gravity that forms when, say, a massive star burns out and collapses to an infinitesimal point. Suppose you perturb it, as you might strike a bell. How does the black hole respond? ....

United States , New Zealand , California Institute Of Technology , Reinhard Genzel , Nicolas Yunes , Adrian Cho , Los Angeles , Andrea Ghez , Albert Einstein , J Robert Oppenheimer , Sean Carroll , Samuel Gralla , Carlos Palenzuela Luque , John Archibald Wheeler , Robert Wald , Frank Ohme , Troy Kerr , Palenzuela Luque , Roger Penrose , Saul Teukolsky , David Finkelstein , Isaac Newton , University Of California , University Of Oxford , Max Planck Institute For Extraterrestrial Physics , University Of Florida ,