An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, initially detected in 1988, was confirmed in 2003. As of 1 April 2023, there are 5,346 confirmed exoplanets in 3,943 planetary systems, with 855 systems having more than one planet. The James Webb Space Telescope (JWST) is expected to discover more exoplanets, and also much more about exoplanets, including composition, environmental conditions and potential for life.
In what year was the evidence of an exoplanet first confirmed?
The detection of an exoplanet was first confirmed in 1992