Space Exploration. Apollo 11. Astronaut Edwin "Buzz" Aldrin descends the steps of the lunar module to the moon's surface on the 20th July 1969 to become the 2nd man to walk on the moon, following in the footsteps of Neil Armstrong. This photograph was tak [Getty Images]

Space Exploration, Apollo 11, Astronaut Edwin "Buzz" Aldrin descends the steps of the lunar module to the moon's surface on the 20th July 1969 to become the 2nd man to walk on the moon, following in the footsteps of Neil Armstrong, This photograph was taken by Armstrong - the 1st man on the moon, Apollo 11 with it's crew Neil Armstrong, Buzz Aldrin and Michael Collins made history when the lunar module touched down on the moon's surface (July 20th 1969) and Neil Armstrong followed by Buzz Aldrin were the first to walk on the moon (Photo by Popperfoto via Getty Images/Getty Images)