Astronomers find most ancient star ever seen

Australian astronomers say they have found a star 13.6bn years old, making it the most ancient star ever seen.

It was formed a couple of hundred million years after the Big Bang that brought the universe into being, they believe.

Previous contenders for the title of oldest star are around 13.2bn years old — two objects described by European and US teams respectively in 2007 and 2013.