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Loading contentAndrea Ghez used the Keck telescopes and adaptive optics to follow stars orbiting the centre of the Milky Way with extraordinary precision. Her measurements, independent of Genzel's, confirmed a four-million-solar-mass black hole, Sagittarius A*. In 2020 she became the fourth woman to win the Nobel Prize in Physics.
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Official record of Nobel laureates, prize motivations, and award years.
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