A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

How well do you know Europe and its borders? This quiz will test that.Each hint will lead you from one country to its ...

Approaching his final year as governor, Newsom is staking the next phase of his career on the proposition that he first ...

There was no indication that the U.S. would start detonating warheads, but the president offered few details about what ...