Across
- 4. the colors we see
- 6. a change in wavelength
- 7. death of a large star by explosion
- 8. says the universe began as a small point
- 9. location of star formation
- 10. helps you see the stars at night
- 11. distance between any two corresponding points
- 13. our star
- 14. how fast light travels
- 16. very high energy & no mass or charge
- 17. electromagnetic waves that are very high energy
- 18. a grouping of stars in space
- 19. the matter space contains
- 20. a self luminous celestial body
Down
- 1. distance that light travels through space
- 2. transfer of energy through matter
- 3. shorter wavelength than visible light
- 5. appear as dark dark ribbons against bright stars
- 12. long wavelengths and low frequencies
- 13. spread out from the center of a spiral galaxy
- 15. point at which something begins