Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature ...

Here, we present a graphic breakdown of the famous broadcast from Welles and Mercury Theatre on October 30, 1938.

The mission was historic, but equally memorable was the famous "Earthrise" photo that resulted, showing Earth rising above ... Anders described the sequence of events: "I don't know who said ...

Famous landmarks around the world switched their lights off for an hour on Saturday night as part of an environmental awareness campaign, Earth Hour. The Eiffel Tower in Paris, Rome's Colosseum ...