Scientists have found strong evidence of a giant gas planet in the nearest star system to our own. At four-and-a-half light years away, the lifeless planet would be a close neighbour to Earth in astronomical terms and could have moons that sustain life.

Scientists have found strong evidence of a giant gas planet which could have habitable moons in the nearest star system to our own. The lifeless planet is thought to be four-and-a-half light years away,