Across
- 2. a self luminous celestial body
- 4. Electromagnetic waves that are between radio waves
- 9. The transfer of energy through matter or space
- 11. large grouping of stars
- 12. large cloud of gas and dust in interstellar space
- 14. An instrument that collects light or other electromagnetic radiation and concentrates it for a better observation
- 16. It is the big bright star in the middle of our solar system
- 17. Waves that are very high and are used in medical and astronomical applications
- 19. Electromagnetic waves with very high energy and no mass or charge
Down
- 1. Solar____ Used in astronomy as a standard unit to compare the size of other starts to our sun
- 2. large star explosion
- 3. Unifying scientific explanations for a broad range of hypotheses is called _____ theories
- 5. The distance between any two corresponding points that are adjacent on a wave
- 6. Our galaxy is called the ________ Galaxy
- 7. Waves that provide us with visible light
- 8. Beginning point at which something begins
- 9. The change in wavelenght that allows us to determine if an object us moving toward us or away from us is called _____ shift
- 10. all space and matter space contains
- 13. There is a tv show that is called this. It is a theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago
- 15. A unit of length equal to the distance that travels through space in one year
- 18. Electromagnetic waves with long wavelengths and low frequencies