Scientific Theories

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Across
  1. 2. a big chunk of metal and rock found in the universe
  2. 5. A theory that started the universe
  3. 7. when something is spinning
  4. 8. the force that keeps the sun and plants in orbit
  5. 10. the earth ____ around the sun
  6. 11. the thing we live in
  7. 13. something that enters the earth's atmosphere and burns up
  8. 14. made observations with the naked eye
  9. 15. is orbiting around another body
  10. 16. chunks of dust and ice that revolve around the sun
Down
  1. 1. a star system
  2. 3. the person who made the heliocentric model
  3. 4. when planets and moons revolve around the sun
  4. 6. when planets revolve around the earth
  5. 9. something we live in
  6. 12. chunks of rock and dust found from asteroids