They believe that a star, slightly smaller than our Sun, passed very close to our solar system about billions of years ago.

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests.

Jamie Carter is an award-winning reporter who covers the night sky. “We choose to go to the moons of Jupiter and Saturn and do the other things not because they are easy but because they are ...

Saturn has overtaken Jupiter as the planet with the most moons, according to US researchers. A team discovered a haul of 20 new moons orbiting the ringed planet, bringing its total to 82 ...

With a total of 95 moons, Jupiter has once again surpassed Saturn as the planet in our Solar System with the most moons. Saturn, Jupiter’s outer neighbour, currently has 83 known satellites. The four ...

In 1610, Italian astronomer Galileo Galilei discovered both the four moons of Jupiter — Io, Europa, Ganymede, and Callisto — and the rings of Saturn. Not long after, in 1623, the two planets ...

Cornell University astronomers studying Jupiter's moon Io say tidal heating may help support life in the oceans of Jupiter's ...

Particularly notable among Saturn's moons are Titan, the second-largest moon in the Solar System (after Jupiter's Ganymede), with a nitrogen-rich Earth-like atmosphere and a landscape featuring dry ...

It is one of only four "terrestrial" planets or moons—those with solid bodies, as opposed to those made largely of gas, like Jupiter and Saturn—that has a substantial atmosphere. The other ...

Until scientists learn more then, here are seven of the most fascinating discoveries they’ve made about Saturn so far. The ...

By staring into the hellish landscape of Jupiter's moon Io—the most volcanically active location in the solar system—Cornell ...

Saturn has 146 identified moons in its orbit. They range in size, the smallest being a few hundred feet across, to Titan, the second ...