On the first image it looked like a lens flare, but holy moly, that hubble photo is amazing. That thing is 5000 light-years long btw.
What would happen if a planet like ours was placed right in front of it?
I tried to look it up in SpaceEngine, but the jet unfortunately isn't yet implemented.
I suspect it would not be pleasant for a planet in the path of that beam,particularly if it was closer to the source where the beam is narrower and presumably a lot more energetic.