This article lists the top 7 largest moons in our Solar System, detailing their size, the planet they orbit, and key ...

The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

Turn a telescope to the eastern sky in the hours following midnight on Nov. 5 to see two colossal shadows darken the cloud ...

How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it seems. When you purchase through links on our site, we may earn an affiliate ...

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

If there's no magma ocean, where does the 'melt' come from that emerges from the volcanoes as lava? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

CAPE CANAVERAL, Fla. (AP) — A NASA spacecraft is ready to set sail for Jupiter and its moon Europa, one of the best bets for finding life beyond Earth. Europa Clipper will peer beneath the moon’s icy ...