Across
- 4. how fast light travels
- 6. the change in wavelength that lets us know if an object is coming toward us or not
- 7. electromagnetic waves with longer wavelengths than visible light
- 9. a theory that says the universe began as a small point that expanded rapidly
- 10. ____ radiation consisting of electric and magnetic waves
- 15. the transfer of energy through matter or space as electromagnetic waves
- 18. all space and matter in space contains
- 19. provide us with visible light spectrum
- 21. electromagnetic waves with very high energy and no mass or charge
Down
- 1. electromatic _____ vast arrangement of electromagnetic waves in relation to their wavelengths
- 2. a large grouping of stars in space
- 3. area of stars spread out from the center of a spiral galaxy
- 4. a self luminous celestial body
- 5. rotational center of a huge galaxy
- 8. an explosive death of a star
- 11. the distance light travels in a year
- 12. an instrument that collects light or other electromagnetic radiation and concentrates for better observation
- 13. a huge grouping of stars in which contains the solar system
- 14. ___ galaxy - a galaxy with very little symmetry
- 16. begining point at which something begins
- 17. electromagnetic waves with long wavelengths and low frequencies
- 20. scientific _____ unifying scientific explanations for a range of hypotheses and observations that have been supported by scientific experiments