I am 44 and want to get my PhD in Physics. I am not really concerned about my ability or love of physics, but I am somewhat concerned that there may be a bias against me in the admission process because of my age. There is the fact that much of my formal mathematical and physical education was obtained a while ago (which I hope to at least compensate for with strong test scores, excellent recommendations and suffienct preparation). Perhaps this is not enough information for people to comment on; but I would welcome any feedback from current or prospective PhDs about the age factor in PhD-level physics. Are there PhD students my age? How rare is it? Given my age, what steps can I take to improve my chances of being accepted to a top program (apart from the obvious ones)?