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Astronomy and astrophysicsis the study of planets,stars, galaxies and the universe as a whole, including how they originate and how they evolve with time.
Most astronomy positions require a Ph.D in the field of astronomy which usually takes 5-7 years to complete. THese programs are likely to contain courses in astrophysics, stellar and planetary physics, galaxies, cosmology, interstellar medium and optics. Mathematics and computer science are also emphasized.
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