The study of astronomical objects and phenomena using physical and chemical principles is known as astrophysics. According to one of the field's ancestors, Astrophysics aims not to establish the location or motion of the celestial bodies but to demonstrate the nature of these objects. The interstellar medium, the cosmic microwave background, the Sun, other stars, galaxies, extrasolar planets, and more are all investigated. Their luminosity, density, temperature, and chemical composition are some properties measured from their emissions across the electromagnetic spectrum. Because of its breadth, astrophysics draws on the theories and methods of many subfields of physics. Research in the field of modern astronomy frequently necessitates efforts in both theoretical and observational physics. Astronomers investigate many topics, such as the universe's beginning and end, the nature of dark matter and dark energy, the properties of black holes and other astronomical objects, and more.The evolution and formation of the Solar System, stellar dynamics and evolution, and galaxies' birth and evolution are all theoretical astronomers' research areas.

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