No other rocky moon or planet appears to have so much water (the Earth's ocean at most is 7 miles deep
(No other rocky moon or planet; appears; ) (No other rocky moon or planet; to have; so much water (the Earth's ocean at most is 7 miles deep) (so much water; is; 7 miles deep)
No other rocky moon or planet No other rocky moon or planet so much water
appears to have is
so much water (the Earth's ocean at most is 7 miles deep
7 miles deep