As we learn new things about something, we start to believe we know a lot about it. But this isn’t often the case with space. Our Solar system is much, much bigger than you would expect, and you’d be surprised how little we know about it. But soon, with the launch of a next-generation telescope, that might change. Does this mean we would finally detect an elusive Planet 9? Will we find some other secrets our Solar system has stored for us? And would it all change the way we perceive our place in

Our solar system's possible new planet, explained. | The Verge