A European-Japanese spacecraft has beamed back some of the best close-up photos yet of Mercury's north pole as part of only the second human survey of our solar system's innermost planet.

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

April’s planetary parade has fewer planets. Only four will line up: Venus, Saturn, Mercury and Neptune. April's parade of ...

The planet Mercury is mainly made up of iron ... It collected extensive data and images and transmitted them back to Earth to be studied by scientists. BepiColombo is a joint space mission by the ...

Starting tomorrow and continuing through April 25th, the planet Mercury will be visible to the naked eye in our sky.

And as MESSENGER also taught us, Mercury is shrinking. Gas giants Jupiter Neptune New Horizons Outer planets Spaceflight Voyager 2 Get the best tech, science, and culture news in your inbox daily.

The relative size of the inner planets of our solar system: Mercury, Venus, Earth and Mars. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!