Studying the Universe

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Across
  1. 6. Name of the first animal in space
  2. 8. Space measurement that equals about 150 M/KM
  3. 10. An instrument that collects EM radiation from the sky
  4. 12. Way The name of Earth's galaxy
  5. 13. The color of the shortest wavelengths the human eye can see
  6. 15. Detects infrared radiation
  7. 16. How many time did John Glenn orbit the Earth in his first trip
  8. 17. A telescope that uses lenses to gather and focus light
  9. 19. 9.46 x 10^12
Down
  1. 1. First country to launch satellite into space
  2. 2. A telescope uses mirrors to gather and focus light
  3. 3. A collection of stars, gas, and dust bound together by gravity
  4. 4. Our galaxy is this shape
  5. 5. The study of the origin, properties, and evolution of the universe
  6. 7. Spacecraft that carries only instruments no humans
  7. 9. National Aeronautics and Space Administration
  8. 10. The number of people NASA has landed on the moon
  9. 11. All the frequencies or wavelengths of EM radiation
  10. 14. Earth's atmosphere acts as ______ against UV radiation
  11. 18. The study of the universe