Earth in Space

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Across
  1. 2. The largest planet in the solar system.
  2. 3. planet with rings made of ice and rock.
  3. 5. Caused by a planet's rotation.
  4. 7. The planet known as the "Red Planet."
  5. 11. The sun and all the planets, moons, and objects that orbit it.
  6. 14. A group of stars forming a pattern in the sky.
  7. 17. The path a planet takes around the Sun.
  8. 18. The spinning of a planet on its axis.
  9. 19. The movement of a planet around the Sun.
  10. 20. A large system of stars, gas, and dust bound by gravity.
Down
  1. 1. A rocky planet closest to the Sun.
  2. 3. A dark area created when an object blocks light.
  3. 4. The time when a planet faces away from the Sun.
  4. 6. An imaginary line that a planet rotates around.
  5. 8. Caused by the tilt of Earth's axis as it orbits the Sun.
  6. 9. Earth's natural satellite.
  7. 10. The force that keeps planets in orbit around the Sun.
  8. 12. A ball of hot gas that provides energy to Earth.
  9. 13. A ball of glowing gas in space that emits light.
  10. 15. Changes throughout the day as the Sun moves in the sky.
  11. 16. Energy from the Sun that allows us to see.