space crossword

123456789101112131415161718
Across
  1. 2. everything we can see, touch, hear, sense.
  2. 7. distance between waves
  3. 8. what the earth does around the sun.
  4. 9. galaxy- stars concentrated in sprial arms.
  5. 10. where all light comes from
  6. 13. galaxy- between other galaxies.
  7. 14. year-distance light travels
  8. 16. galaxy- doesn't have a shape.
  9. 18. way galaxy- where our solar system is
Down
  1. 1. explosion in space
  2. 3. galaxy- no internal structure.
  3. 4. affect- light and wavelengths.
  4. 5. cloud of gas and dust.
  5. 6. dust and light held together by gravity.
  6. 10. object in space.
  7. 11. arms- extend from the center of sprial galaxies.
  8. 12. russell diagram- scatter plot of stars
  9. 15. hole- sucks up things in space
  10. 17. bang theory- how the universe was made