Jovian planets, also known as gas giants, are large planets primarily composed of hydrogen and helium, with thick atmospheres and no well-defined solid surface. The Jovian planets in our solar system are Jupiter, Saturn, Uranus, and Neptune. Studying Jovian planets is important in planetary science for understanding the formation and evolution of planetary systems.
Reference: Guillot, T. (2005). “The Interiors of Giant Planets: Models and Outstanding Questions.” Annual Review of Earth and Planetary Sciences, 33, 493-530.