Hello all, I am thinking of returning to school to complete a PhD in Physics and hopefully work in particle or astrophysics. I will be 43 in August and think a PhD would be a perfect 50th birthday present to me, along with the knowledge it brings. Of course, I am nervous about my age but I figure I can spend the next 25 years in a job I hate or one I love. Luckily, money is not an issue in my choice and I already have a nice 401k. A bit of background. I have four kids (15, 13, 11 and 7 months) and have recently left my job to stay at home to prepare for a return to school. I have a M.Ed. and a post-grad certificate in Behavior Analysis. BCBAs will call behavior analysis science but it just isn't my kind of science. My undergrad is in general science. Pretty useless unless you are a teacher. When originally working on my degree in physics, I took off to Europe in my last semester and didn't finish until years later. General science was the easiest way to get a degree and escape a rapidly escalating abusive marriage (I am not married to the same man). I needed to go from SAHM to teacher quickly and this way only took a semester. My math and physics courses are from the early 1990s. My plan is to take a year or so to review the math and physics courses I have already taken. I hope to start as a fourth year working on a second degree but that will depend on how quickly everything comes back to me and what has changed. I plan on using MIT's open courseware to study. I did work on my post-grad online, so online study is not a problem for me. Any advice or encouragement would be appreciated.