SpaceX has launched a pair of lunar landers for U.S. and Japanese companies looking to jumpstart business up there.

The Parker Solar Probe flew within 3.8 million miles of the Sun's surface, the closest any spacecraft has ever gone.

A tiny asteroid loitering in a near-Earth orbit for a few months last year may have an intriguing origin on our moon. Its ...

Earth-bound landmarks ravaged by war, climate change, tourism and other threats also landed in the World Monuments Watch ...