A private space station company, Vast, announced on Wednesday that it intends to launch a commercial space station as soon as August 2025. After deploying this “Haven-1” space station in low-Earth orbit, four commercial astronauts will launch to the facility on board SpaceX’s Crew Dragon vehicle.

The California-based company says this crew will then spend about 30 days on board the Haven-1 space station before returning to Earth. As part of Wednesday’s announcement, Vast said those four crewed seats are now up for sale, as are those for a second mission that will launch no earlier than 2026.

“It’s a super aggressive schedule,” Jed McCaleb, the founder of Vast, said in an interview with Ars. “But we have a clear path for how we’re going to get there.”