Find the evidence

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Across
  1. 3. A person who worked at the gas station
  2. 4. The object that marked Route 41
  3. 7. What the attendant was doing to a car at the end of the story
  4. 9. The spacecraft zipped through these into space
  5. 13. This astronaut led the mission to observe Earth
  6. 14. The place where the astronauts reported their findings
  7. 17. What the aliens mistakenly called cars
  8. 18. This astronaut helped collect data on the creatures
Down
  1. 1. The way the spacecraft took off
  2. 2. The coolest dog in the world
  3. 5. The word describing the “eyes” of the creatures
  4. 6. The material the aliens thought the creatures were made of
  5. 8. A sudden flash of light when the spacecraft left
  6. 10. The aliens arrived on Earth in this type of vehicle
  7. 11. The aliens' term for gas station fuel pumps
  8. 12. The aliens believed the cars were doing this at the gas station
  9. 15. The reason the aliens were observing Earth
  10. 16. The aliens' term for roads on Earth