mystery

Edit Answers
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Across
  1. 1. how fast something moves
  2. 4. relating to creatures from another planet
  3. 5. for that reason
  4. 8. to spend time thinking about a possibility or making a decision
  5. 11. something strange or not known that has not yet been explainedor understood
  6. 15. a chance that something may happen or be true
  7. 16. easy to understand, hear, read, or see
  8. 18. to search a place and discover things about it
  9. 19. used to show that something is possible or that you are not certain about something
  10. 22. someone who studies astronomy
  11. 23. to exchange one thing for another thing, especially of a similar type
  12. 24. a formal statement of the rules on which a subject of study is based or of ideas that are suggested to explain a fact or event or, more generally, an opinion or explanation
  13. 25. the empty area outside Earth's atmosphere, where the planets and the stars are
  14. 26. facts about a situation, person, event, etc.
  15. 28. a long, thin, pale green vegetable with dark green skin,
  16. 32. to examine something very carefully
  17. 33. a thing that you can see or touch but that is not usually a living animal, plant, or person
Down
  1. 2. used when you are giving or asking for information that is completely correct
  2. 3. the position towards which someone or something moves or faces
  3. 6. in total
  4. 7. to (cause to) change position
  5. 9. to mention an idea, possible plan, or action for other people to consider
  6. 10. to make something clear or easy to understand by describing or giving information about it
  7. 11. used to show that something is possible or that something might be true
  8. 12. unusual and unexpected, or difficult to understand
  9. 13. the dry solid part of the earth's surface, or any large piece of this that sticks up out of the ground or the sea
  10. 14. (especially in stories) a vehicle used for travel in space
  11. 17. the act of travelling from one place to another, especially in a vehicle
  12. 20. a teacher of the highest rank in a department of a British university, or a teacher of high rank in an American university or college
  13. 21. to hit, especially forcefully, and cause to move or fall
  14. 24. having a small distance between two opposite sides
  15. 26. to (make something) become larger in amount or size
  16. 27. (the study and knowledge of) the practical, especially industrial, use of scientific discoveries
  17. 29. covered in ice
  18. 30. despite this
  19. 31. strange, not known, or not understood