Jupiter's moons resemble little moons! Do they orbit in a regular pattern, similar to how the Moon orbits the Earth? Today, ...

The bright stars Castor and Pollux will be positioned to the left of the moon in the early morning hours of Aug. 19. Mercury, ...

This quiz will challenge your knowledge of Jupiter's features, moons, and the missions that have dared to get close.

Jupiter’s moons have long fascinated scientists with their potential to harbor life, challenging our understanding of ...

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we're not as ...

The waning Moon passes Jupiter, Venus, and Mercury before dawn, while Titan’s shadow transits Saturn in the sky this week.

Jupiter’s moons, such as Io and Europa, could produce striking solar eclipses on the planet. These phenomena illustrate the ...

ESA engineers worked through the night to troubleshoot an ill-fated software bug that jeopardized the mission.

On the fiery Io, the innermost and third-largest of Jupiter’s four Galilean moons, Juno's observations have provided more insights about its incessant volcanic activity.

The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world one of chaos and violence. The brutal conditions also make Io intriguing ...

A massive NASA mission to explore if one of Jupiter’s moons could support life launched Monday morning from Florida. The Europa Clipper spacecraft lifted off aboard SpaceX’s Falcon Heavy ...