Uploaded March 2023 | Updated September 2026, 3 hours ago

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What is the difference between Astronomy, Astrophysics, and Cosmology?

In short, astronomy focuses on observing, astrophysics focuses on the physics and behavior of celestial objects like stars, galaxies, and planets. Cosmologist wonder how the universe began and how it will die.

This video is part of a series called Space 101. Follow along to see more videos on Stars, Nebulae, Black Holes and more!

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Timestamps:
00:19 What is Astronomy?
00:25 What do astronomers study in school?
00:40 What is Astrophysics?
00:52 How do I study astrophysics in college?
01:04 Where do astrophysicists work?
01:09 What is Cosmology?
01:34 How do I study cosmology in school?
01:49 What is the difference between Astronomy, Astrophysics, and Cosmology?

#cosmology #astrophysics #astronomy #space