Galaxies, part 1

The video explores the evolution of our understanding of the universe, starting with early 20th-century astronomy and the puzzling nature of nebulae. It covers the 1920 debate between Shapley and Curtis about the universe's structure, leading to Hubble's discovery of galaxies beyond the Milky Way. The video classifies galaxies into elliptical, spiral, peculiar, and irregular types, explaining their characteristics and formation. It discusses galactic collisions and their role in galaxy evolution, highlighting peculiar and irregular galaxies. The video concludes with a reflection on the universe's vastness and our place within it.

How do galactic collisions contribute to the formation of elliptical galaxies?

What are peculiar galaxies and how do they form?

Explain the characteristics of irregular galaxies.

What role do satellite galaxies play in the structure of the Milky Way?