STRINGS.UI.STARMAP.NO_ROCKETS_HELP_TEXT
Rockets allow you to visit nearby celestial bodies.
Each rocket must have a Command Module, an Engine, and Fuel.
You can also carry other modules that allow you to gather specific resources from the places you visit.
Remember the more weight a rocket has, the more limited it'll be on the distance it can travel. You can add more fuel to fix that, but fuel will add weight as well.