The Wow Signal

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Across
  1. 2. The act of closely watching.
  2. 7. Something that defies explanation.
  3. 8. Originating beyond Earth.
  4. 12. Global condition shaped by weather and temperature.
  5. 15. Lasting only a short time.
  6. 16. An act of asking questions to gather information.
  7. 17. The lasting impact or influence of an event.
  8. 18. The act of discovering or identifying.
  9. 19. A proposed explanation based on limited evidence.
Down
  1. 1. The process of finding something unknown.
  2. 3. Systematic investigation to establish facts.
  3. 4. Puzzling or mysterious in nature.
  4. 5. A transmission of signals over a distance.
  5. 6. An observable event or occurrence.
  6. 9. A deviation from the normal pattern.
  7. 10. Facts or statistics collected for analysis.
  8. 11. The range of electromagnetic vibrations.
  9. 12. A strong desire to know or learn something.
  10. 13. The totality of space and matter.
  11. 14. A transmission or indication from space.