Universe

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Across
  1. 3. small rocky or metallic body in outer space
  2. 4. our universe
  3. 6. the circular motion of an object around its center
  4. 7. the force of attraction between all masses in the universe
  5. 9. the action by a celestial body of going round in an orbit or elliptical course
  6. 10. positioned element is an element whose computed position value is relative
  7. 12. Jupiter, Saturn, Uranus, Neptune
  8. 13. an object that is neither a true planet nor a comet—that orbits within the inner Solar System
  9. 14. Kepler's three laws of...
  10. 15. a theory that places the Sun at the center of the Solar System
  11. 17. theory the Universe expanded from an extremely small, extremely hot, and extremely dense state
Down
  1. 1. a measure of the social, cultural and economic relatedness or connectivity between two places
  2. 2. cosmic snowballs of frozen gases, rock, and dust that orbit the Sun
  3. 5. pulls objects with mass toward each other
  4. 8. a torus-shaped region in the Solar System, centered on the Sun and roughly spanning the space between the orbits of the planets Jupiter and Mars
  5. 11. a debunked theory that the Earth is the center of the universe, with the sun and planets revolving around it
  6. 16. Mercury, Venus, Earth, Mars