Free Astronomy Magazine July-August 2016

36 Of the approximately 5,000 exoplan- ets identified so far with various techniques, none is near enough to leave any hope of reaching it with a probe in the relatively near future. But perhaps things are not quite like that, as there are good reasons to believe that there is an exoplanet so close to us that it could be orbit- ing around the Sun! by Michele Ferrara PLANETOLOGY JULY-AUGUST 2016 Is there an in our solar