

The structures are kind of like Hermione’s charmed handbag in the Harry Potter series, said Nobel Committee for Chemistry member Olof Ramström … “Small on the outside, but very, very large on the inside.”
I feel like there’s a more-recognizable pop-culture reference he could have made there.
Have we mapped the Kuiper belt well enough to say whether or not there are any planet-sized clear paths inside it?
Edit: Actually, the method they’re using to detect its possible existence it is by looking at how it’s perturbing other Kuiper belt objects—so if they do detect something, it’s because it’s actively clearing its orbit.