Final answer:
Astronomy is the study of celestial objects and phenomena outside Earth's atmosphere, belonging to the physical sciences, and plays a key role in understanding the universe's history and evolution.
Step-by-step explanation:
The study mentioned in the question refers to astronomy, which is the branch of science that deals with celestial bodies like stars, planets, moons, galaxies, and phenomena that take place outside the Earth's atmosphere. Astronomy is part of the physical sciences and is considered one of the oldest sciences. It encompasses various aspects, including the evolution and physical properties of objects in the universe, as well as the Big Bang theory which posits the origins of the cosmos. Astronomers use various techniques and instruments to gather information about universe, greatly enhancing our understanding of the cosmos and our place within it.
One important focus within the study of astronomy is on the diffuse matter found between the stars—gases and dust—which provides clues on how new stars are born and sheds light on the origins of our galaxy. Cosmology, a subfield of astronomy, specifically addresses the character and evolution of the universe, including the study of dark matter and the scale of galaxies. Through astronomy, we not only discover the majesty of the cosmos but also partake in a scientific journey that constantly evolves with new findings and technologies.