This is the twenty-sixth video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video describes the types of stars observed in the universe, and covers the HR diagram and the Main Sequence.
From the video description:
Table of Contents:
- Stars Can Be Categorized Using Their Spectra 1:32
- Spectra With Distance Can Identify Luminosity, Size, and Temperature 5:20
- The HR Diagram Plots Luminosity vs Temperature 6:33
- Most Stars Fall Along the Main Sequence 7:16