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Today in History: Astronomers discover first exoplanet around main-sequence star
10/6/2025
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Story summary
- On October 6, 1995, astronomers Michel Mayor and Didier Queloz announced the discovery of 51 Pegasi b, the first exoplanet orbiting a Sun-like star. This groundbreaking finding marked a significant milestone in astronomy, paving the way for further exploration of planets beyond our solar system and expanding our understanding of the universe.
