The first confirmed discovery of an exoplanet occurred in 1992 around the pulsar PSR B1257+12. However, the first discovery of an exoplanet orbiting a main-sequence star (similar to our Sun) was made in 1995 by astronomers Michel Mayor and Didier Queloz.
The exoplanet, named 51 Pegasi b, marked a groundbreaking moment in astronomy and opened the door to the vast field of exoplanet exploration.