Natural Science CLEP Prep Practice Exam

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What is the study of the stars and galaxies called?

  1. Cosmology

  2. Astronomy

  3. Astrophysics

  4. Stellar Physics

The correct answer is: Astronomy

Astronomy is the study of stars, galaxies and other celestial objects and phenomena in the universe. It involves observing, analyzing, and understanding the physical properties and behaviors of these objects through the use of telescopes and other scientific instruments. Cosmology, on the other hand, is the study of the origins and evolution of the universe as a whole. While it also involves studying stars and galaxies, it focuses more on the structure and nature of the entire universe. Astrophysics is a branch of astronomy that focuses on the physical and chemical processes and properties of celestial objects and phenomena, such as gravity, electromagnetism, and nuclear reactions. Stellar Physics is a more specialized field within astrophysics that specifically studies the physical properties and processes of stars. However, neither of these terms encompasses the broad scope of the study of stars and galaxies like the term "Astronomy" does. Therefore,

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