The Sun

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Across
  1. 4. An icy body that releases gas when close to the sun.
  2. 6. Known as the Red Planet.
  3. 11. A massive ball of gas emitting light and heat.
  4. 12. The movement of a planet around the sun.
  5. 13. A system of stars, planets, and other celestial objects.
  6. 14. What the sun radiates to warm the Earth.
  7. 19. A celestial body orbiting a star.
  8. 20. The spinning of a planet on its axis.
Down
  1. 1. The path a planet takes around the sun.
  2. 2. The closest planet to the sun.
  3. 3. Relating to the sun.
  4. 5. When one celestial body moves into the shadow of another.
  5. 7. The hottest planet in our solar system.
  6. 8. A natural satellite of a planet.
  7. 9. What the sun provides to Earth.
  8. 10. The force that keeps planets in orbit.
  9. 11. The star at the center of our solar system.
  10. 15. A rocky body orbiting the sun.
  11. 16. A sudden burst of energy from the sun.
  12. 17. A cooler, darker region on the sun's surface.
  13. 18. The third planet from the sun.