inner planets

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Across
  1. 2. impair the appearance of; disfigure.
  2. 4. the envelope of gases surrounding the earth or another planet.
  3. 5. he second planet from the Sun and is Earth's closest planetary neighbor.
  4. 7. a celestial object that orbits
  5. 8. the planet on which we live; the world.
Down
  1. 1. moved repeatedly around
  2. 3. effect the way in which heat is trapped close to Earth's surface by “greenhouse gases.”
  3. 6. planets a planet whose orbit lies within the asteroid belt, i.e. Mercury, Venus, Earth, or Mars
  4. 9. in some way like earth