Celestial Cycles

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Across
  1. 4. a gravitationally bound system of many stars, gas, planets, and other space debris.
  2. 5. largest planet in our Solar System
  3. 6. when the moon is becoming less illuminated.
  4. 9. variations in Earth's climate during a year. Caused by the tilt of the Earth.
  5. 12. middle of a planets spin.
  6. 13. moon moon phase when the moon is completely on the night side of the Earth.
  7. 14. a single revolution around a star.
Down
  1. 1. round celestial object in a cleared orbit around a star.
  2. 2. a single rotation of a planet around its axis.
  3. 3. when the moon is becoming more illuminated.
  4. 7. moon phase when the moon is completely on the day side of the Earth.
  5. 8. furthest planet from the sun in our Solar System.
  6. 10. large ball of burning hydrogen and helium.
  7. 11. causes the seasons on Earth.