The Solar System

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Across
  1. 4. an attractive force between all objects that have mass
  2. 6. a unit of measurement equal to the average distance between Earth and the sun; about 150 million km
  3. 9. an object that directly revolves around a star, has a nearly spherical shape, and has cleared the neighborhood around its orbit
Down
  1. 1. celestial object that indirectly revolves around a start a celestial object that directly revolves around the sun, has a nearly spherical shape, but has not cleared the neighborhood around its orbit
  2. 2. a small rocky or metallic object that revolves around the sun
  3. 3. a representation of a system that has the same relative sizes or distances as the actual system
  4. 5. a small object made of rock, ice, and dust that has a highly elliptical orbit around the sun and gives off gas and dust in a tail as it travels close to the sun
  5. 7. a star and all the objects that travel around it
  6. 8. a celestial object that indirectly revolves around a star