What did Pokémon Pokopia’s emergency evacuation protocol launch into space?

Pokémon Pokopia’s emergency evacuation protocol launches a rocket ship into space.

The event occurs after Ditto and Professor Tangrowth restore habitats and complete the Team Initiation Challenge. A celebration with party poppers unexpectedly activates an emergency system, revealing that the mysterious structure is actually a rocket ship.

The launch helps explain the game’s wider history. Humanity had left the damaged world for outer space and stored Pokémon in a massive computer system designed to keep operating after the departure. The rocket connects the abandoned surface environment with that earlier human evacuation.

The ship is eventually discovered by a human implied to be Ditto’s original trainer. Items inside, including a photo Ditto sent away, are recovered. Thus, the rocket is a major story revelation rather than ordinary transportation.