What is another word for planetary formation?
Pronunciation: [plˈanɪtəɹi fɔːmˈe͡ɪʃən] (IPA) 
Planetary formation refers to the process by which a planetary body comes into being through the mutual gravitational attraction and aggregation of dust, gas, and other material in a protoplanetary disk orbiting around a star. Synonyms for planetary formation include planetary accretion, planetesimal accumulation, and planetary agglomeration. Accretion refers to the slow accumulation of matter over time, while agglomeration describes the process of particles sticking together to form larger bodies. Planetesimal accumulation specifically refers to the formation of small, solid bodies that serve as building blocks for planets. These terms are all used to describe the complex and fascinating process by which planets are born.
