Astronomers are now regularly detecting planets thousands of light years from Earth – but have we missed one in our own Solar System?

As an astronomer, I collect stars. There are several hundred billion of them in our Galaxy, the Milky Way, so it’s important to find a way to categorise them. While others might rank their stars by co

The year 2025 has been a vintage one for astronomy. In January, we were hooked on reports of a building-sized asteroid on course to collide with Earth. The risk was quickly downgraded from worrying to

How many planets are there in the Solar System? It sounds like an easy question, but it’s more complex than you might think – and actually it’s one we still can’t answer. With scientists finding evide

Although it’s by no means certain, scientists are slowly accumulating evidence that life once existed on the Red Planet

An artist’s impression of Cha 1107-7626 accreting material ...