Inner Planets

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Across
  1. 3. Like Earth in some ways.
  2. 5. The Sun, inner planets, and outer planets make up our _____ ______.
  3. 6. Closest planet to the sun.
  4. 9. gases that surround a planet.
  5. 10. Earth ______ around the Sun.
  6. 11. The star in the center of our solar system.
Down
  1. 1. Also known as the "Red Planet".
  2. 2. The hottest planet in the solar system.
  3. 4. Mercury, Venus, Earth, and Mars make up the _____ _______.
  4. 7. The only planet that can support life.
  5. 8. A celestial object that orbits a planet.