Inner Planets

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Across
  1. 2. Known as the "Red Planet"
  2. 4. the only planet known to inhabit life
  3. 5. A celestial object
  4. 7. Inner Planets are similar to Earth
Down
  1. 1. to move repeatedly around a planet
  2. 3. Known as the "Morning Star"
  3. 6. The first planet from the sun
  4. 8. Planets Mercury, Venus, Earth, Mars