Salvatore Vitale and Calin Plunkett continue: to uncover the origins of the Milky Way's supermassive black hole, scientists propose building larger gravitational wave detectors scaled up by a factor of ten. These advanced observatories would allow researchers to peer further back into cosmic history, potentially detecting black holes from the very early universe. Expanding the global network to four or five detectors would help pinpoint host galaxies and detect the formation of heavy elements. (8)
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