A new study indicates that Mercury's core-mantle boundary (CMB) may possess a diamond layer that extends up to 18 kilometers ...

You might think Mercury, the planet closest to Earth on average, would be the easiest to reach. But you'd be wrong. Thanks to its high speed around the Sun and deep gravity well, it's one of the most ...

"What surprised us, at the end, was how effective this type of impact could be in explaining Mercury's unusual structure ...

NASA’s Messenger spacecraft is expected to end its mission in our solar system with a big bang on Thursday. WSJ's Monika Auger reports. Photo: NASA ...

To date, only NASA's MESSENGER mission has entered orbit around Mercury, exploring the world from 2011 to 2015. Late next year, the joint JAXA/ESA BepiColombo mission will enter orbit around ...

How do space programs get their names? Elizabeth Coen | Monterey, California ...

This image shows Mercury as a small black dot moving across the face of the Sun during its rare transit on May 9, 2016.  This image shows a gravity map of Mercury created using data from NASA’s ...

Last year, NASA's Messenger mission gave us the first up-close view of parts of Mercury, the planet closest to the Sun. The spacecraft has found extensive ridges along the planet's surface ...

Mercury ' s inner core is solid and about the same size as Earth ' s inner core, a new study using observations from NASA's MESSENGER mission has indicated. Mercury is the smallest planet in our ...

But other substances beside water, such as sulphur, could have explained the bright spots near Mercury's poles seen on the radar. The instruments onboard MESSENGER, however, present compelling ...

both robotic and launched by NASA, have visited Mercury so far, making it the least explored terrestrial planet. Mariner 10 launched in 1973 and imaged around 45% of the planet's surface from 1974 ...