Answer:
Astronomy
Explanation:
Astronomy is the science that studies the entire Universe and its celestial bodies. As celestial bodies, we mean the planets, stars, comets, asteroids, nebulae, galaxies, and so on.
Professionals who work with astronomy are called astronomers, and are responsible for analyzing and studying everything that is related to cosmic space, such as the evolution of space and the observation of all the celestial bodies that are in it, for example.
