![]() ![]() This branch is sometimes referred to as "astrometry" or simply "astronomy". ![]() Observational astronomy is concerned with acquiring data, which involves building and maintaining instruments, as well as processing the results. #Fields of astrometry professional#Since the 20th century, the field of professional astronomy has split into observational astronomy and theoretical astrophysics. Historically, amateur astronomers have contributed to many important astronomical discoveries, and astronomy is one of the few sciences where amateurs can still play an active role, especially in the discovery and observation of transient phenomena. Astronomers of ancient Greece practiced a scientific methodology, and advanced observation techniques may have been known much earlier (see archaeoastronomy). Theoretical astrophysics complements observational astronomy in that it seeks to explain astronomical phenomena.Īstronomy is one of the oldest sciences. Astronomical observations can be used to test fundamental theories in physics, such as general relativity. It is concerned with the evolution, physics, chemistry, and motion of celestial objects, as well as the formation and development of the universe. ![]() Astronomy is the science involving the study of celestial objects (e.g., stars, planets, comets, and galaxies) and phenomena that originate outside the Earth's atmosphere (e.g., auroras and cosmic background radiation). ![]()
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