This is the thirty-eighth video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video discusses how galaxies were discovered and measured, and describes the four main shapes of galaxies.
From the video description:
Table of Contents:
- Milky Way is a Galaxy (One of Many) 2:04
- Galaxies Have Four Main Shapes 3:18
- Galaxies Can Collide 6:05