To meet NASA's needs, Vast is planning to launch a larger "Starship-class module" by around 2028. This will be nearly twice as large as Haven-1, with a seven-meter diameter, and it will launch atop SpaceX's Starship rocket. (The International Space Station modules are 4.2 meters in diameter.) Vast has
published a roadmapof its plans all the way out to the 2040s.
McCaleb said Vast opted to start with the smaller Haven-1 station so that it could start flying sooner on proven SpaceX rockets and demonstrate to its customers and NASA the viability of its hardware in actual flight-like conditions.
The company is planning some artificial gravity experiments on Haven-1—it should be able to reach approximately lunar gravity, or one-sixth that of Earth's gravity. It is hoping for a more robust artificial gravity setup with the Starship module later this decade.