A half-century after American astronauts walked on the Moon, NASA and its international partners are taking the dream of Apollo a giant step further....
The New Horizons spacecraft attempts to fly by a mysterious object known as Arrokoth, believed to be a primordial building block of the solar system....
Although the mountain volcano Mauna Kea last erupted around 4,000 years ago, it is still hot today, the center of a burning controversy over whether...
