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

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

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

On 19 October vet Andrew Melville-Smith was driving near the Spencer Gulf in South Australia in his new Tesla Model Y when there was a deafening explosion and he and his passengers were showered with

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