Across
- 4. the way something appears or seems to move
- 7. our galaxy
- 11. shape of the Milky Way galaxy
- 12. farthest from the sun
- 14. third planet from the sun
- 15. belt of space rocks between inner and outer planets
- 18. a large,round object in space that orbits a star
- 19. travels around the center of the Milky Way
- 20. closest planet to the sun
- 21. new stars appear to the
Down
- 1. ancient Romans called our galaxy
- 2. consists of the sun and all the objects around it
- 3. contains billions of stars, dust and gas held together by gravity
- 5. the arm our solar system is in
- 6. between Mercury and Earth
- 8. ancient Greeks called our galaxy
- 9. stars in the northern sky seem to circle around
- 10. each night the position of the stars shifts slighty
- 12. also known as Polaris
- 13. seventh planet from the sun
- 16. between Jupiter and Uranus
- 17. first outer planet
- 20. last inner planet