Astrophysically refers to the study of the physical properties and behavior of celestial bodies and the universe as a whole. There are several synonyms that can be used to describe this field of study, including astrophysical, astronomical, cosmological, celestial, and space science. These words all relate to the study of space and the objects that exist beyond Earth's atmosphere. Astrophysically may be used to describe the study of black holes, stars, galaxies, and other astronomical phenomena. By using synonyms for astrophysically, researchers and scientists can emphasize the vastness and complexity of the universe.