NASA compares the universe's biggest black holes with "each other and to our solar system," in this Goddard Space Flight ...

Splashdown is scheduled to take place at approximately 3:36 am Eastern Time (0736 GMT) off the coast of Dry Tortugas, Florida ...

The two Starliner test pilots — both retired Navy captains and longtime NASA astronauts — will stay at the orbiting ...

A partial lunar eclipse happens when the Earth passes between the sun and moon, casting a shadow that darkens a sliver of the ...