The two will travel with cosmonaut Alexander Misorkin to the International Space Station aboard the Soyuz MS-20 spacecraft operated by the Russian space agency Roscosmos. The launch date has been set for Wednesday, December 8.
Maezawa trained for the 100-day flight, and his stay on the International Space Station is another indication that civilian flights to the space station are becoming more common.
According to AFP, he and his assistant will be the first space tourists to visit the International Space Station in more than a decade, although Roscosmos took a film director and actor there in October to shoot a feature film in space for the first time.
The billionaire announced in March that he was looking for eight more people to join him on his week-long lunar journey, tentatively scheduled for 2023, and everything is going well and he and his SpaceX colleagues will become the first tourists to the moon.