Reply to post: I don't understand the diagram

I don't understand the diagram

The heliosphere is based on solar wind, so why isn't the heliosphere centered around the Sun ? Looking at the diagram, I see a very exaggerated version of Earth's magnetic field. I know the Sun is moving around the center of our galaxy, but surely the heliosphere encounters the pressure of the interstellar medium in all directions, no ?

So why the gigantically-disproportioned tail ?