Earth sun and moon

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Across
  1. 3. a moon phase that looks like a full circle from Earth
  2. 5. when the Moon is completely dark
  3. 8. a rocky sphere
  4. 9. a moon phase in which the Moon is not visible from Earth
Down
  1. 1. a moon phase that looks like less than half a circle from Earth
  2. 2. to shine light on an object and make it visible
  3. 4. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
  4. 6. a moon outside our solar system
  5. 7. the shape of the illuminated part of the Moon as it appears from Earth