Across
- 2. What our sun will eventually become
- 4. Nebulae Areas of thick interstellar dust
- 5. Concentrated dust clouds in space
- 9. Separation of the outer layer of a star
- 12. Sudden collapse of star causing a shock wave
- 13. Energy production within a protostar
- 14. A protostar that begins nuclear reactions slowly
- 15. How stars are born, exist, & die
- 16. Element that produced by fusion in a star's core
- 17. Dying star surrounded by dust & soot
Down
- 1. Star that uses Hydrogen in whole body
- 3. Once a protostar starts nuclear reactions
- 6. Element that is fused in a star's core
- 7. An exploding star
- 8. A protostar that starts nuclear reactions quickly
- 10. The beginnings of a main sequence star
- 11. Star with a Carbon-Oxygen core