Mercury has long been considered a quiet, heavily cratered world, shaped mainly by time and exposure. That assumption began to change when NASA’s MESSENGER spacecraft sent back detailed images of the ...

The planet Mercury is the closest planet to the sun, and also the most difficult for spacecraft to visit and explore. This is ...

Add Yahoo as a preferred source to see more of our stories on Google. Stargazers will soon have an opportunity to view six planets in alignment in the night sky, according to NASA. Mercury, Venus, ...

NASA and the USGS created a topographic map of the closest planet to the sun. It's a view of Mercury that no one has ever seen before. They did it by using more than 100,000 pictures taken from NASA's ...

On April 9, 1959, NASA introduced its very first astronaut class. This dashing group of young men is known as the Mercury 7. They were all military test pilots before they were chosen for the job, and ...

Forget Pluto, a hidden Mickey Mouse lives on Mercury. A NASA spacecraft has captured a spectacular photo of Mercury craters arranged in a shape that looks just like Disney's iconic cartoon mouse. The ...

(NEW YORK) -- Stargazers will soon have an opportunity to view six planets in alignment in the night sky, according to NASA. Mercury, Venus, Neptune, Saturn, Uranus and Jupiter will take part in a ...