Across
- 3. 300,000km/sec (light)
- 5. all planets revolve around it
- 8. large cloud of gas
- 9. center of a galaxy
- 13. univers began rapidly with a bang
- 17. nothing can escape its gravity
- 18. Waves in electromagnetic spectrum
- 21. distance between 2 waves
- 23. 9.5 TRILLION KM
- 24. Used in hospitals
Down
- 1. The death of a star by an explosion
- 2. scientists theorys
- 4. plot of temerature
- 6. scale ___-a proportional representation
- 7. high energy, no mass (think of HULK)
- 10. long wavelengths, slow frequencies
- 11. All space
- 12. Provides light
- 14. Large group of stars
- 15. Allows us to determine whether things are coming to you or not
- 16. Has own light and own gravity
- 19. beginning point of anything
- 20. The transfer of light
- 22. collects light so you can see space