Across
- 3. a grouping of stars in space
- 7. waves electromagnetic waves with longer wavelengths
- 8. radiation radiation consisting of electric and magnetic waves
- 11. arms areas of stars that spread out from the center of a spiral
- 12. center rotational center of a galaxy
- 13. distance between any two corresponding points that are adjacent on a wave
- 14. waves provides us with visible light spectrum
- 15. of light how fast light travels
- 16. the death of a large star by an explosion
Down
- 1. all space and matter contains
- 2. spectrum vast arrangements of electromagnetic waves in relations to their wavelengths
- 4. waves electromagnets waves with long wavelengths and low frequencies
- 5. electromagnetic waves that are between radio waves and infrared waves
- 6. cloud of dust and gas in space
- 9. galaxy galaxy with a bright center and very little gas
- 10. lanes bands of dust that appear dark ribbons against the stars