Constellations (the hint is the shape)

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Across
  1. 1. crab
  2. 3. lyre
  3. 5. unicorn
  4. 6. microscope
  5. 7. sails of a ship
  6. 8. eagle
Down
  1. 1. giraffe
  2. 2. cup
  3. 4. crow
  4. 6. table