Across
- 4. the / sun / planet / from / seventh / the
- 5. force / Earth / the / to / holding / the / us
- 7. planet / our / name / the / of
- 11. space / person / studies / about / who / a
- 13. the / planet / sun / second / the / from
- 14. space / a / that / around / moves / rock / in
- 16. sun / the / planet / from / farthest / the
- 17. sun / the / planet / that / closest / to / the / is
- 18. alien / another / for / name / an
- 19. gravity / who / discovered / the / person
Down
- 1. star / an / moving / a / object / around
- 2. the / solar / our / center / star / at / the / of / system
- 3. sky / in / night / a / light / the
- 6. the / space / travels / in / who / scientis
- 8. person / on / walked / the / moon / who / first / the
- 9. planet / the / red
- 10. of / the / planet / solar / largest / the / system
- 12. we / space / the / fly / in / vehicle / to / that / use
- 15. with / planet / rings / a
- 17. satellite / the / Earth / of