When it comes to writing a second act, few can beat Brian May. As the lead guitarist for Queen, May wrote or collaborated on some of the group's most famous songs, including Bohemian Rhapsody, We Will Rock You, and Fat Bottomed Girls.  After a highly successful career, May decided to take it easy ...by studying astrophysics. He received his Ph.D. in 2007 and is currently chancellor of Liverpool John Moores University.