An international team of astronomers has detected a planet very similar to Jupiter orbiting at the same distance from a Sun-like star. And because the age and chemical composition of this system is similar to our own, it likely features an inner collection of rocky planets. Call it solar system 2.0.
Prior to the discovery of exoplanets, astronomers assumed that our solar system's configuration was typical. But now, some 1,715 exoplanets later, we know that we're far from ordinary. So what passes for "normal" in the annals of solar systems? Here's what we know now.