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