Across
- 4. people that go into space
- 5. snowballs of frozen gases,rock,and dust that orbit the Sun
- 6. 1st planet from the sun
- 8. 5th planet from the sun
- 10. 2nd planet from the sun
- 12. 3rd planet from the sun
- 15. 8th planet from the sun
- 17. groupings of stars
Down
- 1. center of the solar system
- 2. layer of gas surrounding a planet
- 3. killed the Dino's
- 7. dwarf planet
- 9. takes people into space
- 11. 6th planet from the sun
- 13. 7th planet from the sun
- 14. orbit plaints
- 16. 4th planet from the sun