Across
- 3. There is only one of them
- 6. A station we have in space
- 7. What something weights
- 8. An energy carrier that is used to stores
- 11. The only planets we know have life
- 13. A giant cloud of dust and gas
- 14. The brightest star in the sky
- 16. Something that can't change or remain the same
- 17. It is a dying star and it destroys lots of things
- 18. Something that pushes or pulls objects
- 21. The distance light travels in a year
Down
- 1. A time we use
- 2. Something we see in the stars like the big dipper
- 4. A donuts shaped belt that has ice and other things in it
- 5. Another galaxy that is closest to us
- 8. A telescope that we have and can see lots of far away star
- 9. A metal object we have in space
- 10. Where all the planets can be found in
- 12. A triple star system
- 15. The path a planet takes around the sun
- 18. Something that the earth and the planets are in
- 19. Something that we live on
- 20. Giant ball of gas mostly made of hydrogen