SIGNS of an alien planet that’s about the same size as Earth have been picked by up a Nasa telescope. Scientists say it might ...

Could alien signals have already reached Earth undetected? - If advanced alien civilisations exist and have contacted Earth, ...

A faint signal from old telescope data is causing a stir in astronomy: a planet barely larger than Earth, with an almost identical orbital period, and a star astonishingly similar to our sun. It is ...