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.

It, too, may be an abode of life. The body in question is not Mars but Europa, one of the four moons of Jupiter first discovered by Galileo Galilei in 1610. It seemed no coincidence that as ...

But it hasn’t always been this way. Jupiter’s four largest moons – Io, Europa, Ganymede and Callisto – were the first ever discovered orbiting another planet. They were spotted by Galileo ...

NASA's Galileo mission to Jupiter, focusing on the four moons that the Italian astronomer discovered 400 years ago, observed an atmosphere on Europa, ice at the poles and possibly an underground ...

Jupiter has 95 known moons and many moonlets ... For this new study, the researchers created a simulation to demonstrate how the four largest moons may have come to exist. The team started ...

In March and April 2025, internet users shared a striking image that they claimed showed "Steeple Mountain," a massive point ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons as well. While some TNOs could be called dwarf planets because of their ...

Jupiter is the largest planet in the solar system and has 79 moons. The four largest moons of Jupiter (Io, Europa, Ganymede, and Callisto) can be seen from Earth with just a pair of binoculars.

It is always great to grab a pair of binoculars and focus on Jupiter. The small pinpoints of light are the four largest moons of Jupiter, called the Galilean moons. The crescent Moon pairs with ...

Juno is scheduled for an upcoming flyby of Jupiter on May 7, during which it is set to carry out a close approach of the ...

The Jupiter Icy Moons Explorer (Juice ... It will complete at least four orbits of the Sun during its journey. Gravity assistance is key: Jupiter is over 500 million miles from Earth.