Earth in Space and Time

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Across
  1. 3. giants,Another name for the outer planets.
  2. 10. and night are caused by the Earth spinning on this.
  3. 11. Way,The galaxy we live in.
  4. 12. of these takes 24 hours (day).
  5. 14. of these is 365 days (year).
  6. 16. of rock that orbits the sun.
  7. 17. planets,The first four planets closest to the sun.
Down
  1. 1. chunk of ice, dust, and gas with a bright tail.
  2. 2. of stars
  3. 4. by the Earth tilt and revolution around the sun.
  4. 5. atmosphere, mass, revolve around the sun, & rotate on an axis.
  5. 6. energy in the form of light and are made of gas.
  6. 7. of gas, dust, many stars, and any objects orbiting stars.
  7. 8. shape of our galaxy.
  8. 9. outer planets have more of these than the inner planets.
  9. 13. planets,The last four planets in our solar system.
  10. 15. inner planets are mostly made out of this.