What is the largest Galaxy in the Known Universe?

I sometimes forget just how big things can be in the Universe.  And I often forget just how small and insignificant we are in the grand scheme of things.  Then I see a Galaxy like IC 1101 side by side with our own and I very quickly remember. About 350 Million light years from Earth IC 1101 is the largest galaxy in the known Universe in terms of actual size. If you didn’t notice the image above, it shows our own Milky Way Galaxy as a little tiny dot in the bottom left corner, and then Andromeda our closest neighbour,...