[TheHeasman]

"The survey was designed to search for bodies with orbits that extend far above and below the plane of the Earth's orbit around the sun, part of the outer solar system that hasn’t been well-studied."

Christ. I didn't realise we hadn't looked at stuff not in Earth's plane. That's a tonne of space to explore, right in our own backyard.

[Terr_]

Just because there's a lot of space doesn't mean there's a lot of stuff to find in it. :p

[jajko]

Sun's rotation over time sort of aligns everything on that plane (or maintains momentum from accretion disk), galaxies are mostly also in disc forms. Pluto is a bit of an outlier, I wonder if due to some ancient collision or some other force.

So yes its a vast space (2D -> 3D), but should be rather empty no?