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

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

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

The comet dubbed 3I/ATLAS, a rare extrasolar intruder, continues to barrel through the Solar System, attracting interest and speculation from astronomers and space scientists worldwide. Harvard astron

Space scientist Dame Dr Maggie Aderin-Pocock is sure there is alien life out there – and she wants a chance to explore it

We humans are always wondering whether we’re alone in the Universe. But what if we are one of a long line of species that were around long before our planet even existed? This intriguing idea, that li