Phases of the moon

12345678
Across
  1. 2. Fully shown
  2. 4. Very bright
  3. 5. Happens monthly
  4. 8. When the sus light is blocked by the moon
Down
  1. 1. Astonuats
  2. 3. Half covered
  3. 6. We live on it
  4. 7. Fully covered