Exploring Space

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Across
  1. 3. Shape of Milky Way Galaxy
  2. 4. Space telescope used to find Trappist-1
  3. 5. “Invisible” feature near center of Milky Way
  4. 8. Focus of NACA
  5. 9. First U.S. Satellite: ********-1
  6. 10. Massive star explosion
  7. 12. NASA winner of Nobel Prize in physics
  8. 15. Kepler-186f and 1 Pegasi b
Down
  1. 1. Great Observatory launched in 1990
  2. 2. First NASA administrator
  3. 3. First Russian satellite
  4. 6. Jupiter moon that may have water
  5. 7. Signed National Aeronautics and Space Act
  6. 8. Home of world’s largest wind tunnel
  7. 11. Agency before NASA
  8. 13. Home of NASA’s Johnson Space Center
  9. 14. Wavelength detected by Chandra