Mercury, the closest planet to the sun, is only slightly larger than Earth's moon and is pockmarked with craters. The planet is visible to the unaided eye and as such as has long been known to humans.

Mercury is a planet that just doesn't make sense. It's incredibly small yet hosts a relatively massive core. Mercury is so strange that astronomers have not been able to explain its properties with ...

The solar system is composed of the sun, eight major planets, five dwarf planets, over a hundred moons, and countless comets ...

A pair of still-attached probes just completed the closest flyby of the solar system’s least explored planet, capturing the first clear view of Mercury’s impact craters. BepiColombo pulled off its ...

This quiz will explore the facts, the fun and the fascinating quirks of our solar system's speedster. Mercury may be small, but it's mighty, zipping around the sun faster than any other planet. And ...

View of planet Mercury from space. Space, nebula and planet Mercury. This image elements furnished by NASA. A few evenings ago I found myself in a remote layby in Utah close to Canyonlands National ...

While Mercury, the wily planet of communication, doesn’t station retrograde until November 9th, we’re locked and loaded to experience a lovely little preview of its hijinks. We’re talking shadows, ...

The 2024 astronomical calendar is packed with events; And there's more to look forward to, despite the eclipse and auroras already having passed overhead. Nicknamed the "planet parade," a planetary ...

Knowing the qualities of your sun, moon, and rising signs is key to understanding yourself on an intimate level, but knowing the context of those zodiac signs’ planetary rulers is just as important.

A five-planet alignment will be visible in the night sky on Tuesday. Don't miss your lucky chance to see the stars -- or planets -- align. A five-planet alignment of Mercury, Jupiter, Venus, Uranus ...