with all seven of Earth's celestial neighbors joining the show. Here's how to spot it and why it happens. The mysterious Oort cloud is the source of many of our solar system's comets, but ...

UK stargazers were treated to a partial solar eclipse on Saturday morning, a phenomenon that sees the sun partially obscured ...

Professor Brian Cox takes us on a voyage across the Solar System revealing new discoveries, spectacular wonders and mysterious phenomena on the worlds that orbit the sun. Watch all your favourite ABC ...

Even the little-understood Oort Cloud, at the outer edges of our solar system beyond view, has a partly spiral structure.

"These objects really could be anywhere in the solar system at any given time." One million alien visitors from another star system could already be lurking in the solar system. We aren't talking ...

The stars as seen from Earth would have looked dimmer 14 million years ago, as the solar system was in the middle of passing ...

Credit: University of Western Ontario Gregg, a Ph.D. candidate in physics and astronomy, developed a computer model to study our solar system, Alpha Centauri and the interstellar activity—the ...

Alpha Centauri, the nearest star system to the sun, is probably shedding comets and asteroids into our solar system — and even producing a few meteors in our sky. Located just 4.3 light-years ...

The objects around the ringed planet are tiny, but some of them may have formed relatively recently in the solar system’s history. By Jonathan O’Callaghan Jonathan O’Callaghan reported on an ...