WASHINGTON – Earth's first nearly full look at Mercury reveals that the tiny lifeless planet took a far greater role in shaping itself than was thought, with volcanoes spewing "mysterious dark ...

Mercury's surface is extremely hot (red) -- except where it's not, inside permanently shadowed craters at the planet's north pole (blue/purple).

WASHINGTON — Earth’s first nearly full look at Mercury reveals that the tiny lifeless planet took a far greater role in shaping itself than was thought, with volcanoes spewing “mysterious ...

These record Mercury’s planetary contraction: Scientists estimate that the planet’s radius may have shrunk by as much as 4.4 miles (7 kilometers) since it formed. It is probably still ...

Mercury will retrograde from Dec. 13 through Jan. 2 in the last of four times it appears to move backward in the sky this year. Every planet has in our solar system has retrograded for at least ...

The Sumerians also knew of Mercury at least 5,000 years ago. It was often associated with Nabu, the god of writing, according to a site connected to NASA's MESSENGER (Mercury Surface, Space ...

Mercury is an odd little planet. The closest world to the Sun has some extreme surface structures, steep hills and cliffs, which have long been suspected to be the effect of the planet’s ...

During a June 2023 flyby of Mercury, BepiColombo encountered several characteristics of the planet's magnetic field. This field forms a protective magnetic bubble around Mercury and guards the ...

Because Mercury rules the mind and communication, Mercury retrograde can be a time for mental reflection. Planets experiencing retrogrades in 2023 This year, every planet in our solar system will ...