The "list of exoplanet firsts" refers to notable milestones and achievements in the discovery and study of exoplanets (planets located outside our solar system). Here are some significant firsts in the field: 1. **First Confirmed Exoplanet**: 51 Pegasi b (1995) - Discovered by Michel Mayor and Didier Queloz, this was the first exoplanet found orbiting a sun-like star.
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