Japanese billionaire Yusaku Maezawa returned to Earth Monday as he landed in Kazakhstan, 12 days after he docked with the International Space Station on a tourism flight. br br The landing completed a successful test run for his 2023 flight to the Moon with Elon Musk's SpaceX. br br The Russian space agency Roscosmos on December 8 launched Mazewa to the Space Station on a Soyuz spacecraft along with his assistant, who was on the trip to document the billionaire's journey. Watch the video for more.