Far Out Crossword

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Across
  1. 4. The first astronaut in space was?
  2. 7. What planet is less dense than water?
  3. 9. What is Jupiter's largest moon?
  4. 15. The largest asteroid in our solar system, a mammoth piece of space rock.
  5. 17. Which planet is 3.67 billion miles from the sun?
  6. 18. What is the name of the comet only seen on earth every 75 years?
  7. 19. Who was the first man on the moon?
Down
  1. 1. A gas planet half the size of Jupiter and Saturn.
  2. 2. What is the fastest planet in our solar system?
  3. 3. One day on this planet is longer than it's entire year.
  4. 5. What is the name of the spacecraft orbiting the Jupiter right now?
  5. 6. What was the first animal in space?
  6. 8. Which galaxy is closest to our galaxy?
  7. 10. What galaxy contains the only known life in the universe.
  8. 11. What is the name of the north star?
  9. 12. What planet has 79 moons?
  10. 13. What is the name of the constellation of Neptune's son, the hunter?
  11. 14. This planet has the fastest winds in our solar system, reaching up to 1,600 mph.
  12. 16. What planet has a 24 1/2 hour day known as a sol?
  13. 20. Saturn was named after the Roman Titan of?