NPR's Ailsa Chang talks with Regina Barber and Berly McCoy of Short Wave about the formation of the moon's wispy atmosphere, sea lion cameras and the Perseid meteor shower. It's time now for our ...

The largest lunar feature in the vicinity of Shioli is the Sea of Nectar, a basin 210 miles (339 kilometers) in diameter that is one of the oldest on the near side of the moon, the hemisphere that ...

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, ...