Astronomy

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Across
  1. 3. when Earth moves around the sun
  2. 5. imaginary line that passes through Earth
  3. 6. the planet we live on
  4. 8. when the moon looks almost full
  5. 9. when the moon looks very thin and curved in the sky
Down
  1. 1. the four periods with different weather on Earth
  2. 2. moon's different appearances
  3. 3. to move around itself
  4. 4. the Earth's track around the sun
  5. 7. when the moon is not visible at all