Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

We've all heard the saying "is Mercury in retrograde?" but what does the famous saying mean? Here is everything to know and ...

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 ...

Mercury is a planet that just doesn't make sense. It's incredibly small yet hosts a relatively massive core. Mercury is so strange that astronomers have not been able to explain its properties with ...

Mercury, the first planet from the Sun - The Forgotten Planet. With the search for life beyond Earth primarily focusing on Mars and the rest of the solar system, it’s easy to forget about the small ...

A European-Japanese space mission will reach Mercury in 2026, carrying instruments designed to answer a question that has ...

Until recently, Mercury seemed to be the only planet in our Solar System without aurorae, those streams of light that appear on Earth in the polar skies when solar wind bombards the upper atmosphere ...

Mercury, the speedy little planet closest to the sun, is making a special twilight appearance this month as a bright pink dot low in the sky. The show started on Feb. 8 and will continue until Feb. 21 ...

Despite being among the brightest objects in the sky, Mercury is a planet very rarely seen by even experienced stargazers. The next couple of weeks offer the best opportunity in 2013 for observers in ...