This solar event will rock all your worlds. A rare parade of five planets will be visible in the night sky on Tuesday evening, so keep your eyes on the sky. Mercury, Jupiter, Venus, Uranus and Mars ...

A layer of diamonds up to 18 kilometers (11 miles) thick could be tucked below the surface of Mercury, the solar system's smallest planet and the closest to the sun, according to new research. The ...

From now through mid-April, in the western evening twilight sky, the "Queen of the Night," better known as the brilliant planet Venus, will help you to identify the normally hard-to-find planet ...

Look up! For the first time in nearly two decades, Mercury, Venus, Mars, Jupiter and Saturn will all be visible in the Chicago area -- at the same time -- to the naked eye this week. And the best day ...

So maybe YOU have seen the planet Mercury. But most people have not, or at least they have not realized they’ve seen it. In an extremely unscientific email poll of fifteen of my friends and relatives, ...