Space Crossword

123456
Across
  1. 1. One of Moon's moons
  2. 3. A dwarf planet
  3. 4. Surveys the Earth from Space
  4. 6. "The Red Planet."
Down
  1. 2. A stormy planet that's blue
  2. 4. Light up the sky at night
  3. 5. The planet on which we live on