The Cosmic Crossword

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Across
  1. 2. – "The Milky Way is one."
  2. 4. – "Orion is a famous one."
  3. 6. – "A place in space where gravity is so strong that even light cannot escape."
  4. 7. – "Small rocky body orbiting the Sun, not a planet."
Down
  1. 1. – "A unit of astronomical distance."
  2. 3. – "Used by astronomers to look at the stars."
  3. 5. – "A stellar nursery where stars are born."