Space exploration is the investigation and study of outer space through the use of space technology, satellites, spacecraft, and other tools. It involves the exploration of celestial bodies such as planets, moons, asteroids, and comets, as well as the study of phenomena beyond Earth's atmosphere. Space exploration has led to many significant discoveries, advancements in technology, and a greater understanding of the universe. It is conducted by various organizations, including NASA, the European Space Agency, and private companies such as SpaceX.