Investigators say when they looked at the plane's engine, some parts were loose and appeared to be installed incorrectly, ...

The year is 1949.The United States is four years past victory in World War II.Thanks to the heroic efforts of 16 million ...

About 63 hours after its launch, Surveyor 1 landed on the Moon on June 2, 1966. The 2,200-pound (998 kilograms) craft touched ...