Solar System Models

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Across
  1. 5. Orbital motion of one object around another object.
  2. 6. Sun at the center.
  3. 7. A large spherical object that orbits the Sun.
  4. 8. To move or go backward.
Down
  1. 1. A three dimensional round shape, like a ball or a planet.
  2. 2. The circular motion of an object around its center.
  3. 3. Earth at the center
  4. 4. A representation of an observable phenomenon.