Great Work

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Across
  1. 3. the amount of books, cds or dvds that are sold
  2. 8. a thought or idea
  3. 9. to succeed
  4. 11. to talk to a group of people and teach
Down
  1. 1. space and everything in it
  2. 2. having many sales
  3. 4. relating to science
  4. 5. an area in space that pull things toward it
  5. 6. the huge explosion that created the galaxy
  6. 7. the part of a person that thinks and feels
  7. 10. something unknown