It is very clean. It is, however, maybe too clean. I don't feel as astronomically attracted toward your posts as I think I ought to be. Unless the white background represents the solar photosphere, just more heliochromological humor (sorry), then, perhaps, something with more astronomical feel would be possible.
Also, you are the BA -
Bad
Astronomer, not the
Bad
Astronaut. The shuttle background in your personal photo is cool, but would a HST background magnify your viewpoint. Perhaps a slide show (is that what they are called?) of your most interesting personal images would be appropriate. You could let us pick which ones.
Hopefully, others will comment on these two ideas - background and personal image.
Can we use emotional icons in the comments, yet?
[Edit: The red boxing glove astronaut still works fine, contrary to any above comment.]