Our solar system is a vast and mysterious place, filled with wonders waiting to be discovered. Recently, scientists have made a remarkable discovery at the very edge of our solar system ...

Most of the long-period comets in the Solar System come from the outer Oort Cloud. The inner region is much more stable. It's ...

Floating around at the edge of the Solar System are leftovers from its formation. This is the Kuiper Belt, which is composed of chunks of rock and ice like comets, dwarf planets, and random objects ...

The Oort cloud is traditionally thought of as a vast shell of perhaps trillions of icy objects encasing our solar system, serving as the final boundary between us and the dark reaches of ...

a band of icy material at the edge of our solar system. Some of these alien visitors could even make their way into the inner solar system. The scientists behind the new finding suggest that the ...

The mysterious cloud of space rocks and debris at the edge of the solar system may have spiral arms, making it resemble a mini galaxy, a new study says. The Oort cloud is a theoretical debris ...

Watch this video to find out more about the Earth, planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth.

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered? Faint signatures detected by the ...

“Every single time,” Brown says, “there’s this little charge of, ‘Oh my God, this little ice ball at the edge of the solar system has never before been seen by human eyes until this very ...