Buzz Aldrin, 92
Along with Neil Armstrong, Buzz Aldrin is one of the most acclaimed astronauts globally. The two served as commander and modules pilot on the Apollo 11 expedition where they became the first people out of only twelve to have set foot on the moon.
Aldrin has led a very eventful life, as detailed in his two autobiographies. In 2016, at the age of 86, he became the oldest person to reach the South Pole while on an expedition.