Across
- 1. The death of a large star by explosion
- 3. very little dust or gas
- 4. electromagnetic waves with longer
- 6. All space and the matter space contains
- 7. center is the sun
- 9. low frequencies
- 11. is how fast light travels
- 13. the transfer of energy from the sun to the
- 14. rotational center of a huge galaxy
- 17. radiation that contain waves
- 18. a huge grouping of stars that rotate and
Down
- 1. areas of stars that spred out
- 2. electromagnetic waves with long wave lengths
- 5. A galaxy wih a bright center
- 8. waves
- 10. An object with more than four solar masses
- 12. provide us with visible light
- 15. electromagnetic waves that are between
- 16. a large grouping of stars in space