Jets in space seem like a really common thing, they're found associated with active galaxies, protostar accretion disks, and around neutron stars and stuff. But from what I understand, no one really knows how they work. Or rather, there's no... "equation" for them. The process that forms these jets is still quite a bit of a mystery, right? I am wondering what makes explaining this process so difficult. Is it because we can't see the start of the jet directly, and so it's actually impossible for us to figure out exactly what's going on? Or is it because the process itself is very complicated?