Sun and Moon Puzzle

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Across
  1. 2. Pertaining to the sun
  2. 3. Super-heated matter; a "soup" of charged particles
  3. 4. When one celestial body appears to cover another in the sky
  4. 6. The bowl-shaped holes on the surface of the moon
  5. 8. The lightest element, what the sun is mostly made up of.
  6. 9. Pertaining to the moon
Down
  1. 1. The flat, smooth plains on the moon's surface, called "seas."
  2. 2. The charged particles pushed out from the sun at high speeds (Two words).
  3. 5. The dim, hot, outer atmosphere of the sun
  4. 7. Our closest celestial neighbor
  5. 8. The sun uses hydrogen as fuel, which becomes this element