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

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 ...

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

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

Enceladus is a medium-sized moon of Saturn made up of a crust of water-ice and an ocean of liquid water below. This ocean is in some senses similar to those on Earth and is connected directly to Encel