| − | The '''Sea of Tranquility''' is one of the large craters on the [[Moon]]'s surface. Like all the so-called seas and oceans on the Moon, it contains no [[water]]; 'sea' is merely a fanciful designation used to make it easier to refer to parts of the lunar landscape. | + | The '''Sea of Tranquility''' is one of the large craters on the [[Moon]]'s surface. Like all the so-called seas and oceans on the Moon, it contains no appreciable amount of [[water]]; 'sea' is merely a fanciful designation used to make it easier to refer to parts of the lunar landscape. |