Destiny's crossword puzzle

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Across
  1. 2. largest object in space
  2. 4. dark plains on the moon
  3. 5. dirt dust and soil of the moon
  4. 7. first space telescope
  5. 8. valley structure or canyon
  6. 9. dark spots on the sun
Down
  1. 1. when the moon gets smaller
  2. 3. when the moon gets bigger
  3. 5. color of the longest wavelength
  4. 6. oldest feature of the moon