Black holes are located in the center of nearly all large galaxies, where gravity pulls so strongly that even light can not escape. They are not visible to the naked eye, but astronomers can detect black holes with special telescopes that help them to see how stars close to black holes act differently from other stars. When astronomers recently viewed a galaxy where there was once a black hole, they found that it was missing. Listen to hear what scientists think about the puzzle of the missing black hole.
Story Length: 1:34
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