Solar System

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Across
  1. 2. hottest planet
  2. 4. consists of our star, the Sun, and everything bound to it by gravity
  3. 7. the only planet that is known to support life
Down
  1. 1. largest planet in our solar system
  2. 3. an invisible force that pulls objects toward each other
  3. 5. a star that is in the center of our solar system
  4. 6. the closest planet to the sun