text: Maezawa, 45, who became a billionaire from the online retail sector, also plans to participate in a lunar circumnavigation on SpaceX's Starship spacecraft, rival to Roscosmos and owned by US billionaire Elon Musk, in 2023?
classes:  No, spaceX is a spacecraft owned by American tycoon Elon Musk, who is also a rival to Roscosmos.  Also, spaceX is a spacecraft owned by American tycoon Elon Musk, who is also a rival to Roscosmos.  Yes, spaceX is a spacecraft owned by American tycoon Elon Musk, who is also a rival to Roscosmos.