Professor Martin Stein has largely always been one of the steady heads of The CWs DC realm since he debuted in The Flashs first season. But that doesnt mean he was always that way. Weve already seen the younger Stein, courtesy of a trip back to 1975, and his affinity for smoking pot, but now we got to hear how Martin always wanted to be a space adventurer. In his days as a young prof-in-waiting, Stein dreamed of being Space Ranger Stein, a loveable traveller who saved the galaxy. Unfortunately, the dream of the young Stein was shot down by certain rules and regulations in place at NASA some of which seemingly involved Steins enjoyment of the funny cigarettes back in the day.