SpaceX plans to launch this space station. It looks futuristic.

NASA, in 2030, will plunge the aging International Space Station into the ocean.

The space agency is banking on commercial companies to build and operate future habits in orbit around Earth. One of them could look like Haven-1, built by the space technology company Vast. The Southern California company has released the final designs for its sleek-looking Haven-1 capsule, which SpaceX plans to launch on its workhouse Falcon 9 rocket as early as 2025.

While the program has a dependable rocket...