After writing "We Will Rock You" and touring around the world as the lead guitarist in Queen, Brian May made an unusual career choice: He got his Ph.D. in astrophysics. May explains how Queen developed its distinctive sound and explains his fascination with stereoscopic photographs taken in the 1850s.
Astrophysicist George Smoot. Since 1974 he's worked on NASA's Cosmic Background Explorer (COBE) satellite, leading the instrument team that detected cosmic "seeds." In 1992 he announced that he and a team of researchers had detected the biggest, oldest objects ever observed in the universe, the "cosmic seeds" that were the origin of galaxies and clusters of galaxies.