Many! As in exoplanets. (5,496 planets confirmed beyond our solar system!) exoplanets.nasa.gov
#NASAExoplanets
#NASAExoplanets
Exoplanet Exploration: Planets Beyond our Solar System
NASA’s Exoplanet Exploration Program, the search for planets and life beyond our solar system.Exoplanet Exploration: Planets Beyond our Solar System