Across
- 3. The second stage of a stars life cycle
- 5. The natural satellite of Earth
- 6. The brightness of something
- 7. when a star is 100 times its former size
- 11. The phases of the moon
- 12. The actual brightness of a star
- 14. A dead star
- 16. The type of Galaxy that the milky way is
- 18. A fixed luminous point in the night sky that is a large, remote incandescent body like the sun.
Down
- 1. The brightness of a celestial object as it appears from Earth
- 2. when a star starts dying
- 3. The star turns into a different type of nebula
- 4. Travel in a closed path
- 5. A star during the main part of its life
- 8. The star around which the earth orbits
- 9. The hottest color of stars
- 10. The path earth takes around the sun
- 13. The stage that a star begins it's life
- 15. The planet on which we live
- 17. Imaginary line that runs through the center of a planet, moon, or star that it rotates around