Quiz

1. How do stars form?
2. How massive are newborn stars?
3. What are the life stages of a low-mass star?
4. How does a low-mass star die?
5. Do stars produce calcium?
6. Have we seen stars being born?
7. What is a planetary nebula?
8. Are new stars being born in the Orion nebula?
9. What is the mass range of most stars?
10. How does the law of angular momentum apply to star formation?  

Hint: Check planetary nebula in Wikipedia