galilean moon

On the rare occasion when our planet is at opposition, with good binoculars you can see Europa, our closest potentially habitable world.

A distinctive common feature of the giant planets in the Solar System is the presence of ring systems orbiting the planet.

The total number of 'natural satellites' orbiting this giant planet has been raised to 66, astronomers have revealed. Codenamed S / 2011 J1 and S / 2011 J2, these two moons were