Astrophysics

Part of Astronomy that study physical and chemical characteristics of heavenly bodies. Astrophysics is the most important part of Astronomy at the present time owing to advance of modern physics. Doppler- Fizeau´s effect, Zeeman´s effect, quantum theories and thermonuclear reactions applied to study of heavenly bodies have permitted to discover the solar magnetic field, study stellar radiations and their processes of nuclear fusion, and determine radial velocity of stars, etc. Electromagnetic radiation of heavenly bodies permits to make spectrum analysis of themselves, and they are the principal fountain of information in this part of Astronomy.

Translation from spanish by Elvis Hernández R.