UFO minis

12345678910
Across
  1. 2. A network of gullies and ravines that 19th-century scientists erroneously believed to be the product of an intelligent, water-seeking civilization.
  2. 3. The non-profit research organization whose mission is to explore, understand, and explain the origin and nature of life in the universe.
  3. 4. The apparent contradiction between the lack of evidence for extraterrestrial life and various high estimates for their probability.
  4. 5. The 1997 classic sci-fi comedy that follows a secret organization that monitors extraterrestrial life on Earth.
  5. 8. 39 members of this cult committed suicide in 1997 because they were convinced that an alien spacecraft was hidden behind a comet.
  6. 10. The name of the cave in France that some believe features drawings from 10,000 BC that depict a prehistoric UFO.
Down
  1. 1. This type of UFO was observed by hundreds of people in Belgium in 1989-1990, and by 20,000-30,000 people in Nevada and Arizona in 1997.
  2. 6. Thousands of Americans have taken out insurance against these.
  3. 7. The names of the two aliens who frequently appear in the Simpsons Treehouse of Horror episodes.
  4. 9. The planet often referred to as the “Alien Planet.”