Across
- 3. what determines the life cycle of a star
- 6. how old is our universe
- 9. Two lighter elements that fuse to create heavier
Down
- 1. what takes place inside the core of a star
- 2. Lines towards longer wavelength
- 4. what percent of hydrogen is through our universe
- 5. what galaxy do we live in?
- 7. How many neutrons can the first valance ring hold
- 8. how many neutrons can the second valance ring hold
- 10. Average size of a star