More than 350 years after the discovery of gravity, nearly 150 years since Thomas Edison fired up a light bulb and close to a ...

Astronomers have found clues in the form of a cosmic question mark, the result of a rare alignment across light-years of space. It's 7 billion years ago, and the universe's heyday of star ...

Today you'll find a remarkable light bulb burning bright at a fire station in Livermore, California. It hasn't been turned off since 1901, shining around the clock (save for a few brief ...