Black hole close up

123456789
Across
  1. 5. very good
  2. 6. objects so massive and dense that nothing can escape
  3. 7. well thought out and calculated
  4. 8. the laws of gravity
  5. 9. puzzling
Down
  1. 1. unbelievably large
  2. 2. the study of stars
  3. 3. partnership
  4. 4. understanding