Mars has two moons, but they're not quite like Earth's moon. That's raised a lot of questions about where they're from, ...

Skywatchers will witness a rare event as the Moon, Mars, and Mercury appear close together in the twilight sky this October.

The 6%-lit waxing crescent moon will be visible roughly 5 degrees above the horizon as the sun sets on Oct. 23, with Mercury ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

Tonight, October 23, 2025, stargazers are in for a rare treat as the waxing crescent moon lines up with Mars and Mercury just ...

When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

The results of Hera's flyby could ultimately tell us whether Deimos is a captured asteroid or made from debris from a giant impact on Mars. Europe's Hera mission, on its way to the Didymos–Dimorphos ...

A space probe flying past Mars captured images of the red planet's small, mysterious moon. While on a flyby of Mars, Hera was able to use three of its imaging instruments to capture images of Deimos, ...

THIS ARTICLE IS republished from The Conversation under a Creative Commons license. The Artemis program has been NASA’s best chance to get “boots on the moon” again. But with the new US administration ...

As mankind was planning the first moon landing in the 1960s, an asteroid approached Earth—and still hasn’t left.