Who first discovered the solar system?

Discovery and exploration of the Solar System is observation, visitation, and increase in knowledge and understanding of Earth's "cosmic neighborhood". This includes the Sun, Earth and the Moon, the major planets including Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune, their satellites, as well as smaller bodies including comets, asteroids, and dust. read more

See, technically, no one discovered the solar system. It was always there. Your question should be who was the first to observe the solar system as it is and the first to make the closest model of the solar system to the reality. read more

He was the first astronomer to correctly describe the spiral structure of our Milky Way Galaxy. Neptune was discovered by John Couch Adams in 1846. Adams was an English astronomer and mathematician who, at the age of 24, was the first person to predict the position of a planetary mass beyond Uranus. read more