Alex's puzzle

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Across
  1. 2. to show or point out
  2. 5. the study of stars, planets, and other heavenly bodies
  3. 8. out of the ordinary
  4. 10. to confuse or to puzzle
Down
  1. 1. modern;current
  2. 3. to write, print, or engrave letters or words on a surface
  3. 4. proper order
  4. 6. to challenge
  5. 7. to delay leaving
  6. 9. to cover up or to conceal