Rogue Planet Finds Home in Biggest Solar System Ever Seen

Astronomers have found the parent star for a gas-giant exoplanet named 2MASS J2126, which was previously thought to be a "rogue" world flying freely through space. The planet and its star are separated by about 7,000 astronomical units (AU), meaning the alien world completes one orbit every 900,000 years or so, researchers said. For comparison, Neptune lies about 30 AU from the sun, Pluto averages about 40 AU from Earth's star and scientists think the newly hypothesized "Planet Nine" never gets