Trio of alien planets

摘要

Aliens could be watching aliens watching aliens. That's a realistic prospect now that three potentially habitable planets -a record - have been glimpsed orbiting the same star. Earlier studies had suggested that a nearby star, Gliese 667C, had three planets, only one of which might support life. But the very presence of multiple planets made their precise number hard to tease out. Now Guillem Anglada-Escude of the University of Gottingen in Germany and his colleagues have reanalysed the original data and added some new observations.