Add Yahoo as a preferred source to see more of our stories on Google. Mercury, the closest planet to the sun, is only slightly larger than Earth's moon and is pockmarked with craters. The planet is ...

Mercury occurs naturally in minerals but usually isn't released into the air, where it can become harmful to humans. It is released and enters the atmosphere when coal, garbage and other items are ...

Mercury is a rather tricky thing to see in the night sky. The tiny planet orbits so close to the sun that the star's blazing light simply washes Mercury out of Earth's sight. The only time we get to ...

The planet closest to the Sun may be small in stature, but it’s full of surprises. National Corporate funding for NOVA is provided by Carlisle Companies. Major funding for NOVA is provided by the NOVA ...

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 ...

Mercury, the closest planet to the sun, is only slightly larger than Earth's moon and is pockmarked with craters. The planet is visible to the unaided eye and as such as has long been known to humans.