As the full moon shines in the night sky this weekend, take a moment to revel in its beauty and search for a large, dark plain. The surface feature is Mare Tranquillitatis, or the Sea of ...

The dark expanses of Mare Serenitatis (Latin for Sea of Serenity) and Mare Tranquillitatis (Sea of Tranquility) can also be seen scarring the moon's surface, easily visible to the naked eye. The ...

An Italian-led team reported Monday that there’s evidence for a sizable cave accessible from the deepest known pit on the moon. It’s located at the Sea of Tranquility, just 250 miles (400 ...

An Italian-led team reported Monday that there's evidence for a sizable cave accessible from the deepest known pit on the moon. It's located at the Sea of Tranquility, just 250 miles (400 ...

It has been discovered that the Sea of Tranquility, where Apollo 11 made the first manned landing on the moon, has a vertical hole leading to a huge underground tunnel.

The full moon won’t peak until 6:17 a.m. ET Sunday, but the silvery orb will still appear at its best Saturday, the 55th anniversary of NASA astronauts Neil Armstrong and Buzz Aldrin conducting ...

The surface feature is Mare Tranquillitatis, or the Sea of Tranquility, where the Apollo 11 mission landed on the afternoon of July 20, 1969. The full moon won’t peak until 6:17 a.m. ET Sunday ...

Scientists have found a subterranean cavity beneath the Sea of Tranquility, and it may provide shelter for future lunar astronauts in the form of a cave.. Lunar caves, or underground passages ...

The surface feature is Mare Tranquillitatis, or the Sea of Tranquility, where the Apollo 11 mission landed on the afternoon of July 20, 1969. The full moon won’t peak until 6:17 a.m. ET Sunday ...

As the full moon shines in the night sky this weekend, take a moment to revel in its beauty and search for a large, dark plain. The surface feature is Mare Tranquillitatis, or the Sea of Tranquility, ...

(CNN) — As the full moon shines in the night sky this weekend, take a moment to revel in its beauty and search for a large, dark plain. The surface feature is Mare Tranquillitatis, or the Sea of ...