Jupiter is already the biggest planet by far in our solar system, but new research suggests it was somehow once even larger than it is now. Twice as large, in fact. To put that into context, those ...

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...

A groundbreaking study suggests that beneath the frozen surface of Enceladus, Saturn’s smallest moon, there could be vast, ...

A sequence of images captured by NASA’s Hubble Space Telescope showed how much the giant storm changed shape as it traveled within the planet’s atmosphere. By Robin George Andrews The Great Red Spot ...