Space, UFOs and Aliens

12345678910
Across
  1. 1. Sixth planet from the sun, second largest in the solar system
  2. 5. Ship A UFO that releases or takes in other UFOs
  3. 7. The study related to unidentified flying objects
  4. 9. Not explained, unknown
  5. 10. An occurrence of seeing something unusual
Down
  1. 2. Height above sea level
  2. 3. lights Abnormal lights seen in the night sky
  3. 4. a planet outside our solar system
  4. 6. When a human or an animal has been captured by an alien
  5. 8. Maybe from another world, extraterrestrial