The space

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