Interstellar astrophysics is the study of celestial objects and phenomena that exist beyond our own solar system. This fascinating field of science uses advanced telescopes and space probes to gather data on stars, planets, galaxies, and other cosmic structures. Synonyms for interstellar astrophysics include space science, astronomy, astrophysics, extragalactic astronomy, and cosmology. Each term highlights a different aspect of the study of the universe. Space science focuses on the exploration and understanding of space itself, while astronomy is a broader term that encompasses the entire field of celestial observation and study. Astrophysics specifically refers to the physics of astronomical objects, while cosmology examines the origins and evolution of the universe as a whole.