Sun helps us explore other planets

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Across
  1. 5. a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with
  2. 6. describes when there is not a lot of visible light; the opposite of bright
  3. 7. the sixth planet from the Sun in our solar system
  4. 8. the amount of space between two things
  5. 10. the fourth planet from the Sun in our solar system
  6. 11. the third planet from the Sun in our solar system
  7. 12. all the planets and other objects that orbit around a star
  8. 14. the eighth planet from the Sun in our solar system
  9. 15. a large, round object in outer space that orbits a star
  10. 16. the first planet from the Sun in our solar system
Down
  1. 1. describes when there is a lot of visible light; the opposite of dim
  2. 2. the fifth planet from the Sun in our solar system
  3. 3. a panel that can absorb the Sun's light to use as a source of energy
  4. 4. the second planet from the Sun in our solar system
  5. 9. energy from the Sun that can warm things up and be made into electricity; a renewable resource
  6. 13. circling another object, like the Earth around the Sun
  7. 17. the seventh planet from the Sun in our solar system