Sun, Moon and Stars

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Across
  1. 1. We live on this planet
  2. 5. The path a stellar object moves around a star
  3. 6. This is experienced by the half of the Earth in light
  4. 7. An imaginary straight line between the North and South poles
  5. 10. This is experienced by the half of the Earth in shadow
  6. 11. The time it takes for the Earth to make a complete orbit around the Sun
Down
  1. 2. The action of an object spinning around on its axis
  2. 3. The force of attraction between objects that have mass
  3. 4. A natural satellite of the Earth
  4. 8. The largest object in our solar system.
  5. 9. A celestial body that appears as a luminous point at night