Lonely But Not Alone: A Planet Orbits its Star at 1 Trillion Kilometres

The Royal Astronomical Society (RSA) has announced the discovery of a planet that orbits its star at a distance of 1 trillion kilometres. This is easily the furthest distance between a star and a planet ever found. For comparison, that's 7,000 times further than the Earth is from the Sun. At that distance, a single orbit takes about 900,000 years, meaning that the planet has orbited its star less than 50 times. The planet itself was discovered in an infrared sky survey by US researchers, and fol...