Across
- 5. large cloud of gas and dust-star nursery
- 7. high pressure/temperatures begin nuclear fusion
- 8. highly luminous star in 3rd stage of life
- 9. outer gases drift away-core heats up
Down
- 1. protons and electrons smash forming neutrons
- 2. inward force equal to force of gravity
- 3. hot-dim star-left over from supernova
- 4. diagonal pattern on HR Diagram
- 6. large-bright-hot core made of mostly hydrogen