Beyond the observable universe is the unobserved universe that we have yet to see. It simply goes on forever. If it is not infinite, where does it end? Think about it. It cannot possibly end.
Rumours of the danger posed by HUDF-JD2 may be the tip of the iceberg. We must await the launch and deployment of JWST. However I shall never cease to be ammused. Merci Garth.