Water ice is a far more complex substance than we might assume. Scientists have now created an exotic new form of ice in the ...

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

The Jovian moon Io has more than 400 active volcanoes, but the latest discovery is the largest of them all. Share on Facebook (opens in a new window) Share on X (opens in a new window) Share on ...

Ganymede is an enormous moon, larger than any other we’ve found, including our own, and may one day be the centerpiece of wider human settlements around Jupiter.

There's a lot less sky and a lot more moon in view for Firefly Aerospace's "Ghost Riders in the Sky" mission.

Firefly’s Blue Ghost Mission 1 is set to touch down on the Moon’s Mare Crisium on March 2, following a final lunar orbit ...

A small uncrewed spacecraft is buzzing the moon, with under two weeks remaining before its bold attempt to land on the lunar ...

The lander, Blue Ghost, fired its engines for four minutes Thursday to propel the spacecraft into lunar orbit ahead of a ...

moons Ganymede, Callisto, and Io are seen orbiting Jupiter in a Hubble Space Telescope image. Credit: NASA / ESA / Hubble Heritage Team (STScI / AURA) Callisto, the third largest moon in the ...

The moon's orbit is elliptical, or oval-shaped, meaning as its distance from our planet changes, its apparent size changes, too — but only slightly. If you're an avid moon-watcher, you might ...