Space race

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Across
  1. 3. (Clue: Astronomical instrument)
  2. 5. (Clue: Liftoff event)
  3. 7. (Clue: Relating to the sun
  4. 9. (Clue: Vast system of stars)
  5. 10. (Clue: Path of a celestial body)
  6. 14. (Clue: First living being in space)
  7. 15. (Clue: Space mission to collect comet samples)
  8. 16. (Clue: Early NASA rocket)
  9. 17. (Clue: Touchdown module)
  10. 20. (Clue: NASA moon mission)
  11. 21. (Clue: Force that keeps objects in orbit)
  12. 22. (Clue: NASA program for two-person missions)
  13. 25. (Clue: American space explorer)
  14. 27. (Clue: First artificial satellite)
Down
  1. 1. (Clue: NASA's first human space program)
  2. 2. (Clue: NASA moon mission)
  3. 4. (Clue: Reusable spaceplane)
  4. 5. (Clue: Related to the moon)
  5. 6. (Clue: Crewed spacecraft)
  6. 7. (Clue: Spacewalk synonym)
  7. 8. (Clue: Spacecraft propulsion)
  8. 11. (Clue: Path of a celestial body)
  9. 12. (Clue: General term for space vehicles)
  10. 13. (Clue: Rocket used in Apollo program)
  11. 18. (Clue: Russian space explorer)
  12. 19. (Clue: EVA activity)
  13. 21. (Clue: Soviet cosmonaut)
  14. 23. (Clue: NASA mission control center)
  15. 24. (Clue: Planet of interest)
  16. 26. (Clue: First human in space)