READING 1A: A MYSTERIOUS VISITOR

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Across
  1. 4. To have become greater in size, amount, or degree
  2. 9. Unusual or difficult to understand
  3. 10. The rate at which something moves
  4. 11. Unexpected or causing a feeling of wonder
  5. 13. To strike a surface, like a door, to get attention
  6. 15. Scientists who study stars, planets, and the universe
Down
  1. 1. The path that a moving object follows
  2. 2. Something that is difficult or impossible to understand or explain
  3. 3. A word that means "perhaps" or "possibly"
  4. 5. The Sun and all the planets that move around it
  5. 6. Not the same as other
  6. 7. Going by or moving past a location
  7. 8. Occuring or situated between the stars
  8. 12. To travel through a place to learn about it
  9. 14. Not thick; having a small distance between two opposite sides