Mercury will be farthest from the sun on Tuesday (Aug. 19), granting early risers a perfect opportunity to spot the fleet-footed world somewhat separated from the glare of our parent star. Mercury ...

If you've never sighted this rocky little world for yourself, you'll never get a better opportunity than right now to see it.

Mercury, often considered the “elusive planet,” is notoriously difficult to observe due to its proximity to the Sun. However, ...

From monitoring Mercury to launching a new adventure to an icy moon of Jupiter, spacecraft and astronauts made great strides in 2024. Here are some of the highlights of this year in space. The moon ...

Findings from a recently published paper by Smithsonian senior scientist Thomas R. Watters reveal that Mercury has managed to retain much more of its interior heat than previously thought. Images and ...

Despite being relatively nearby, very few space probes have visited the solar system's innermost planet. Any spacecraft aiming to study Mercury must accelerate to incredible speeds, and that can take ...

Comets are not the only celestial bodies with tails. Earth and Mercury also possess them, formed by different mechanisms.