Exoplanet

Summary

An exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first detected in 1988, was confirmed in 2003. In 2016, it was recognized that the first possible evidence of an exoplanet had been noted in 1917. As of 4 June 2026, there are 6,298 confirmed exoplanets in 4,709 planetary systems, with 1,054 systems having more than one planet.