Solar System Vocabulary

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Across
  1. 3. a mass of dust and gas moving about the sun in an irregular orbit, may have a tail that streams away from the sun
  2. 6. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night
  3. 8. the planet third in origin from the sun
  4. 9. any groups of stars to which definite names have been given, such as Ursa Major, Orion
  5. 11. the sun together with all the planets and other bodies that revolve around it
  6. 13. the curved path a planet follows around the sun
Down
  1. 1. space explorer
  2. 2. a theory that deduces a cataclysmic birth of the universe from the observed expansion of the universe, cosmic background radiation, abundance of the elements, and the laws of physics (also the name of a popular TV show)
  3. 4. Earth's natural satellite
  4. 5. an optical instrument for making distant objects appear larger and therefore nearer
  5. 7. a piece of a comet, traveling through space, that enters Earth's atmosphere and falls to the ground
  6. 10. the force that pulls things toward the center of Earth
  7. 12. the star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat