The elusive planet Mercury reaches its furthest point from the sun on Friday (Jan. 12), with this separation allowing skywatchers a chance to spot the tiny planet. The fact that Mercury is the closest ...

NASA's MESSENGER mission has revealed that Mercury, the solar system's tiniest planet and the closest to the sun, hides a big secret. When you purchase through links on our site, we may earn an ...

This week the European Space Agency posted a slightly ominous note regarding its BepiColombo spacecraft, which consists of two orbiters bound for Mercury. The online news release cited a "glitch" with ...

How do you explore the interior of a planet without ever touching down on it? Start by watching the way the planet spins, then measure how your spacecraft orbits it — very, very carefully. This is ...

Mercury, the smallest planet in the solar system, is still slowly contracting as it cools. Now, new research offers the clearest picture yet of how much the planet has shrunk since its fiery birth 4.5 ...

David Rothery is Professor of Planetary Geosciences at the Open University. He is co-leader of the European Space Agency's Mercury Surface and Composition Working Group, and a Co-Investigator on MIXS ...

UNDATED (WKRC) - Six of eight planets in our solar system will align in a straight line in the midnight sky very soon. The planetary alignment, which has been called a "planet parade", will happen on ...