Space Crossword Puzzle

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Across
  1. 3. Unmanned spacecraft collecting space data
  2. 5. Small matter from space entering Earth's atmosphere
  3. 8. a large, round object that revolves around the sun but has not cleared the region around its orbit meaning it does not have enough mass or has a round enough shape for its own gravity
  4. 9. Group of stars forming a pattern
  5. 10. One full orbit around another object
  6. 11. Explosive eruption of waves and particles into space
  7. 12. Rocky mass revolving around the sun
  8. 14. Large, round object orbiting a star
  9. 15. Imaginary line Earth rotates around the sun
Down
  1. 1. Mercury, Venus, Earth, and Mars; rocky surfaces
  2. 2. Jupiter, Saturn, Uranus, and Neptune; larger with no clear surfaces
  3. 4. Frozen mass of ice, dust, and rocks orbiting the sun
  4. 6. Path an object takes around a star
  5. 7. a natural object that orbits a larger object (planets)
  6. 10. One complete spin on an object's axis
  7. 13. Gigantic ball of hot gases emitting radiation