On March 24, 1961, NASA's Mercury Redstone rocket launched on its last uncrewed flight before it started sending astronauts ...

Mercury is the closest planet to Earth — yet for decades, scientists struggled to reach it. Extreme heat, intense radiation, ...

NASA's Mercury-orbiting spacecraft, Messenger, is going out with a bang this week, adding a hefty crater to the little planet closest to the sun. The first spacecraft to circle Mercury, Messenger is ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...

Although NASA’s Project Mercury and SpaceShipOne served very different objectives, a closer look reveals that both missions were powered by equal parts of competition, innovation, and a strong dose of ...

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 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 ...

Part 2 explores the dramatically different approaches to the launch systems, and the surprising similarities in the factors that contributed to their success. Although they served very different ...