Private passenger flight

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Across
  1. 2. To become gas
  2. 6. To approach the ground with a vehicle
  3. 7. A flight into space
  4. 10. The existence of living beings on Earth
  5. 13. The outer layer of Earth
  6. 14. The center of Earth
  7. 15. To rotate around an object
  8. 16. The measured amount of heat in a place or in the body
  9. 18. A staff onboard a vehicle
  10. 19. To make something more modern
Down
  1. 1. usual, not special
  2. 3. A person aboard a vehicle
  3. 4. A nickname for Earth due to its appearance from space
  4. 5. An adjective describing a system where the sun is the main star
  5. 8. The amount of space between two places
  6. 9. To become ice
  7. 11. The Earth's axis is this (not straight)
  8. 12. A spaceship in other words
  9. 17. A natural satellite that orbits Earth