This is one of my favourite videos of all time:
Geo Video, FAR
The song is written and performed by George Hrab, an independent musician and skeptic. This is actually the theme song for the 365 Days of Astronomy Podcast, a daily 5-10 minute blurb focusing on many different areas of astronomy, from the simple to the complex. It’s a great way to learn more about astronomy. You can even make your own podcast if you feel so inclined, just book a day and send in your recording and transcript. If you’d like to see more of George (Geo) Hrab’s stuff, check him out at the Geologic Podcast.