On July 20, 1969 American astronauts Neil Armstrong and Edwin Buzz Aldrin first conquered the moon in the famous space mission Apollo 11. The two spacemen explored the dark side of planet Earth’s only natural satellite, and left on the lunar surface a memorial plaque of the challenge.

From that day on, many things have changed, including the end of the Cold War, which greatly incentivized the spaceflight. At the end of the last century the world’s main space agencies have finally joined forces, building and launching the International Space Station(ISS), a habitable research laboratory located in the low Earth orbit.