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 ...

DID you see these weird clouds in the York sky this morning? Members of our Press Camera Club took to Facebook to share the unusual cloud formations which appeared above York today. Keen ...

was astonished to discover a portal-shaped cloud looming over her home in Tullibody, Scotland. Mckeown said: "I'm always looking out my bedroom window at night; the skies have been so weird this ...

Previous research has suggested that the Oort cloud contains remnants of the solar system's planets, which were formed over 4 billion years ago, but its exact shape and structure have been a mystery.