Planetary science is the study of the planets and moons, particularly of the solar system. It studies objects ranging in size from micrometeoroids to gas giants, aiming to determine their composition, dynamics, formation, interrelations, and history.
Planetary science has several disciplines, including planetary astronomy, geology, and atmospheric sciences. Because it is quite interdisciplinary, schools will place planetary science within their geology, earth sciences, astronomy, or physics departments.
About Planetary Science
Planetary science is related to astronomy, physics, geology, and atmospheric sciences. Some schools use the term synonymously with earth sciences or geosciences; see the article on geology for more information. It is also related to space science.