Quiz

1. How do we detect planets around other stars?
2. How do extrasolar planets compare with planets in our solar system?
3. Do we need to modify our theory of solar system formation?
4. What is a Hot Jupiter? 
5. Do extrasolar systems have a frost line?
6. Define the frost line
7. On which side of the frost line is Earth?
8. On which side of the frost line is Jupiter?
9. What is a meteorite?
10. What hit Russia last Friday, February 15, 2013? 

Hint: Consult Wikipedia