` ::Thanks! I didn't want to go too much into non-standard sizing as it would generate controversy. The image is now legible in thumbnail view and easily clickable for a zoom, plus it will appear in google search results for searches on an image for ``science``. Also, I don't list astronomy as a fundamental branch because it is typically treated as a fork off of physics. Under physics I list astrophysics and particle physics. I agree it's strange that physical science doesn't link to astronomical systems, but my rationale was that I want to focus attention on the ``building block`` concept and not clutter the diagram. It's awkward though, so I'll noodle a bit more on this to see if I can get the mapping fixed cleanly. Thanks again, I have a fragile ego and feedback like this makes my world go round!  `