Science Crossword

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Across
  1. 3. Earth does this making us have 365 days a year
  2. 4. Known as the red planet
  3. 7. is a group of stars close together
  4. 10. An measurement in space.
  5. 11. The furthest away from sun
  6. 12. Our sun is one
  7. 13. The planet we live on
  8. 16. The joining of separate nuclei
  9. 18. The galaxy that we are in
  10. 22. Jupiter Saturn Uranus Neptune in this category
  11. 23. Nothing can escape not even light
Down
  1. 1. The amount of light received on Earth from Star
  2. 2. The amount of light received from 33 light years
  3. 4. A streak rock or dust burning up
  4. 5. is summer and winter
  5. 6. Billion of stars together
  6. 7. These are made up of mostly Ice
  7. 8. Our sun and stars are formed from this
  8. 9. Is the most common galaxy
  9. 14. Earth Venus Mars Mercury in this category
  10. 15. the outer layer of the sun
  11. 17. Stars have large amounts of this
  12. 19. Sometimes called North Star
  13. 20. Is what our sun produces for earth
  14. 21. Known as the planet with the ring