Part 2 explores the dramatically different approaches to the launch systems, and the surprising similarities in the factors ...

View of planet Mercury from space. Space, nebula and planet Mercury. This image elements furnished by NASA. A few evenings ago I found myself in a remote layby in Utah close to Canyonlands National ...

CAPE CANAVERAL, Fla. (AP) – The only spacecraft ever to orbit Mercury ended its four-year tour with a crash landing Thursday. NASA’s Messenger plunged from orbit as planned and slammed into the sun’s ...

Mercury is the innermost and smallest of the eight major planets in our Solar System, orbiting closest to the Sun. Though ...

Plume of gas ejected from Mercury’s atmosphere extended to form a comet-like tail, which was captured by the ...

(Left) A colorful view of Mercury produced using images from the color base map imaging campaign during MESSENGER's primary mission (Right) what Mercury may look like were its outer layers stripped to ...

When NASA's Messenger probe finally entered orbit around Mercury, it discovered a world that is still geologically active.

Andy Saunders, author of "Gemini and Mercury Remastered," talked about his process of remastering the most famous photographs of NASA's space program.

Mars and Mercury cozy up, the Leonids sparkle, and Saturn's rings are…disappearing? Mars and Mercury get close for a conjunction, the Leonid meteor ...

NASA's Messenger probe is poised to make history Thursday (March 17), when it will become the first spacecraft in history to orbit the planet Mercury. At 8:45 p.m. EDT Thursday (0045 GMT March 18), ...

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 ...

NASA is asking for the public's help, but there's a catch. Mercury's surface is seen in exaggerated color in this image provided by NASA. NASA/JHU APL/CIW — -- NASA is asking for the public's ...