Science vocabulary words

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Across
  1. 3. a group of stars forming a pattern.
  2. 4. a three dimensional representation of a person or thing.
  3. 6. the curved path of an object around a star, planet or moon.
  4. 7. System A collection of eight planets and their moons.
  5. 9. When an object moves in a circle around another object in the center of the circle.
Down
  1. 1. when an object turns or spins.
  2. 2. unit a measurement used for distances in our solar system.
  3. 5. having to do with the moon.
  4. 7. having to do with the sun.
  5. 8. a real or imaginary line that runs through the center of an object.