Across
- 3. all space and the matter space contains
- 4. a hot gas ball in the middle of our solar system
- 5. waves provide us with visible light
- 7. transfer of energy through matter or space
- 9. a large grouping of stars in space
- 12. waves waves with long low frequencies
- 13. waves with very high energy
- 14. our solar system
- 17. how fast light travels
- 19. a small model of something big
- 20. the distance light travels
Down
- 1. big ball of hot gas millions of miles away from earth
- 2. the death of a star by explosion
- 4. areas of star that spread out
- 6. waves that are between radio and infrared
- 8. the location of star formation
- 10. universe began as a small point
- 11. a tool used to see through another thing
- 15. distance between any two corresponding
- 16. beginning point at something
- 18. a tool that is used to look at the stars
- 21. shift the changes in wavelength that lets us know if something is coming or moving toward us