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Today in History: Mayor and Queloz discover first Sun-like star exoplanet
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- On 6 October 1995, Swiss astronomers Michel Mayor and Didier Queloz announced the detection of 51 Pegasi b—a Jupiter-mass planet orbiting the Sun-like star 51 Pegasi, the first exoplanet found around a main-sequence star. The discovery proved planets exist beyond our Solar System and launched modern exoplanet research.