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 ...

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 ...

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

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 ...

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 ...

Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to ...