This YouTube video defines astronomy, who studies it and how, and covers the basics of astronomical history.
This is the first video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait, known online as the Bad Astronomer (for his website, Bad Astronomy, not as a comment on his knowledge!) From the video description:
Table of Contents:
- What is Astronomy? 3:00
- Who Studies Astronomy? 3:50
- Origins & Developments 6:52