Exoplanet discovery is the field of astronomy dedicated to identifying and studying planets that exist outside of our solar system. Researchers in this area use a variety of techniques, including radial velocity measurements, transit photometry, direct imaging, and gravitational microlensing, to detect and characterize exoplanets. The ultimate goal of exoplanet discovery is to understand the diversity of planetary systems in the universe and to determine the likelihood of finding habitable worlds beyond our own.