A group of swirling storms at Jupiter's north pole are bouncing off each other, like bumper cars at the fairground.

Jupiter has four large moons – Io, Europa, Ganymede and Callisto – with diameters of more than 3000 kilometres. However, as of April 2023, we know it is also home to 91 additional small satellites.

They weren't a priority at launch, but now Nasa's Juno probe is flying by Jupiter's major moons. The spacecraft has had recent close approaches with Ganymede and Europa and is now bearing down on Io.

The European Space Agency’s mission to Jupiter and its moons has been postponed due to adverse weather conditions. The six-tonne probe, named Juice (Jupiter Icy Moons Explorer), was due to head ...

Or perhaps more likely, look at under a microscope. The latest candidate for hosting nearby life is Jupiter’s moon, Io. Let’s take a look at what makes Io special, and what we might hope to ...

Elsewhere in the Solar System, Earth has one moon, Mars has two, Jupiter has 95, Uranus has 28 and Neptune has 16, for a total of 142 moons. We only need to discover ten more moons around Saturn ...

Scott Bolton’s first encounter with Io took place in the summer of 1980, right after he graduated from college and started a job at NASA. The Voyager 1 spacecraft had flown past this moon of Jupiter, ...