Plus: Observe two stunning spirals, see Venus reappear as a morning star, and enjoy the Last Quarter Moon in the sky this ...

Io, the innermost of Jupiter’s four Galilean moons, is the most volcanic world in the solar system, giving it a dynamic mix of yellows, reds, and browns. Hyperion is one of the strangest moons ...

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What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry ...

The discovery has raised a lot of questions. How do you spot moons, and why hadn’t anybody seen these ones already? Doesn’t Jupiter have the most moons? What are they going to call all these ...