1. The Solar System

2. How old is the solar system, and how was it formed? How did stars (and planets) form after the Big Bang? What are the 4 terrestrial planets? What are the 4 gas-giant (Jovian) planets? How is the sun is like a giant nuclear reactor? What is a comet, and why do comets have tails? What is a meteor, and how is it different from a meteorite? What is a very large space rock called? What is the life cycle for small, medium, and large stars? What can become of very large stars when they die?

3. Intro 3:51

4. Planets 3:42

5. Sun 3:16

6. Comets & Meteors 3:55

7. Life Cycle of Stars 3:15