Planetary Science

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Across
  1. 1. Third planet from the sun
  2. 3. phenomena that results in the seasons
  3. 4. The force that keeps planets in orbit
  4. 6. A celestial object made up of ice, dust, rock, and frozen gases that orbits the Sun
  5. 10. A total of 356.25 days
  6. 11. The planet called Gas giant known for its rings
  7. 13. The largest planet in the solar system
  8. 14. This occurs in a 24-hour period
  9. 15. A small rocky or metallic body that enters Earth's atmosphere from outer space
  10. 16. The imaginary line that earth spins
  11. 18. Usually the coldest time of the year
Down
  1. 1. The total number of planets in the solar system
  2. 2. Either of the two moments in the year when the Sun's apparent path is farthest north or south from Earth's Equator
  3. 5. The scientists who specialize in observing, researching, and understanding phenomena occurring in outer space
  4. 7. The time or date at which the sun crosses the celestial equator, which determines the longest day or night is
  5. 8. The star at the center of the solar system
  6. 9. year This occurs every four years
  7. 12. The path planets travel
  8. 15. Earth's Galaxy
  9. 17. A season