The idea of a planet orbiting two suns sounds like science fiction. More specifically, it’s an idea from Star Wars: the fictional planet Tatooine famously has two suns. But in real life? Scientists long thought that was impossible. However, in 2011, the first “circumbinary” planet, as it’s called, was discovered. In the following years, astronomers confirmed more and more. But scientists still didn’t understand much about this rare phenomenon. I…