Planetary sciences is a field of study that deals with the planets, moons, and other celestial bodies that orbit around the sun. It involves the study of their physical and chemical properties, their formation, and their evolution over time. Synonyms for the term "planetary sciences" can include space sciences, astrogeology, astrobiology, planetary geology, and exobiology. Space sciences generally covers all types of sciences related to outer space, while astrogeology and planetary geology are more focused on the study of planetary surfaces and their geological processes. Astrobiology and exobiology, on the other hand, study the possibility of life on other planets and their potential for habitability.