Aggregates of matter in outer space, such as stars, planets, and comets; their properties; and the processes they undergo.

Synonyms: Astronomic Phenomenon, Astrophysical Processes, Phenomena, Astronomic, Processes, Astronomic, Astronomical Process, Astronomic Processes, Astronomical Concept, Astrophysical Concept, Astronomic Process, Process, Astronomical, Astrophysical Concepts, Phenomena, Astronomical, Concept, Astronomical, Astronomical Phenomena, Concept, Astronomic, Phenomenon, Astronomic, Processes, Astrophysical, Processes, Astronomical, Astronomic Concept, Concepts, Astrophysical, Astrophysical Phenomenon, Astronomic Phenomena, Astronomical Concepts, Astronomic Concepts, Astronomical Processes, Concepts, Astronomic, Astrophysical Phenomena, Concepts, Astronomical, Process, Astronomic, Phenomenon, Astrophysical, Concept, Astrophysical, Phenomena, Astrophysical