Solar System Crossword

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Across
  1. 3. the most distant spacecraft from earth
  2. 4. A planet without moon
  3. 8. the dog star
  4. 9. Absorbs the Ultraviolet radiation from the sun
  5. 10. Gave the laws of planetary motion
Down
  1. 1. has longer wavelength than visible light
  2. 2. Protects the earth from solar storm
  3. 5. is the third largest galaxy in our local group
  4. 6. powers the sun
  5. 7. NASA's X-ray telescope