Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Pluto was dismissed as a frozen has-been at the edge of the solar system. But when NASA finally got a close look, what they ...

The United States is treating a strange visitor from deep space as both a scientific windfall and a potential national ...

Instead of the sharp, groundbreaking visuals many expected, the recently unveiled images were surprisingly blurry, a result ...