SPACE

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Across
  1. 4. instrument for making objects appear larger
  2. 5. outside limits
  3. 7. often called the father of observational astronomy
  4. 9. the first artificial Earth satellite
Down
  1. 1. largest and most versatile telescope on the ground
  2. 2. a small rocky body orbiting the sun
  3. 3. study of stars and planets
  4. 6. National Aeronautics and Space Administration
  5. 8. glass for vision