Earth sun and moon system

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Across
  1. 3. the time or day, at which the sun crosses the celestial equator when day and night are of approximately equal length
  2. 4. a celestial body that revolves around a planet
  3. 7. the shape of the illuminated portion of the moon, as seen by an observer usually on earth
  4. 8. a phenomenal, or process that involves multiple steps and repeats itself
  5. 10. time or date, at which the sun reaches its maximum or minimum declination
Down
  1. 1. the imaginary line through earth that extends from the north pole to the South Pole and is the center of earths rotation
  2. 2. the less dark outer part of a sun spot, surrounding the dark core
  3. 5. shadow or darkness
  4. 6. in which the moon appears darkened as it passes into earths shadow
  5. 9. an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination