WH enlightement

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Across
  1. 5. leading chemist of the time
  2. 6. famous astronomer
  3. 7. a sudden change
  4. 8. study of space
Down
  1. 1. an intellectual and philosophical movement in the 17th and 18th centuries
  2. 2. French philosopher
  3. 3. backbone of 5A
  4. 4. subject of science