Elon Musk-led startup SpaceX on Monday revealed that Yusaku Maezawa, founder of Japan's largest clothing website Zozotown, has signed up to be the world's first private passenger to fly around the Moon. The 42-year-old with $2.9 billion net worth will be travelling to space aboard SpaceX's BFR launch vehicle. Only 24 humans have been to the Moon in history.