Science Crossword

3. an icy small system body , this belongs to the asteroid and meteor family
4. a pattern the stars make
6. a synonym for this word is backdrop
8. this contains all of the planets and the sun galaxies and stars
11. small solar system bodies,this belongs to the meteor and comet family
12. galaxy , it is a candy that mostly everyone likes
13. how earth started , a random explosion that made earth and everything else start its existance
16. an exploding star
18. term for size or length , brightness of a star
19. solid debris from asteroids or comets
21. difference in the apparent position , the word starts with a P

1. this also known as a shooting star
2. an enormous cloud of gas
5. very similar looking to a wavelength and a frequency wave , it is the only word that has two word combined to make the one word
7. the "object" earth we live on
9. an object that gives off its own light
10. a bomb or nuclear explosion can give this off , if people are exposed to this they will get really sick and possibly die
13. a gravitational pull where no light at all can escape
14. a specific type of this would be the milkeyway
15. unit of length , he was the space toy in toy story the movie
17. an example of this word is a rainbow
18. it will enter a planets atmosphere it is similar to a meteor
20. a galactic nucleus , the word starts with the letter Q