Some quick napkin math based on rough numbers: Starship estimated payload to LEO: 100 t Voyager mass: 1,820 lb Booster: let's assume an ideal state of 1 Rapt

Some quick napkin math based on rough numbers: Starship estimated payload to LEO: 100 t Voyager mass: 1,820 lb Booster: let's assume an ideal state of 1 Raptor engine (3,300 lb) and 5,000 lb of other stuff before fuel Plugging into the rocket equation and assuming no further staging, that gets us a delta v of 89,428 mi/hr, or about 2.3x the speed of Voyager 1. I'm not sure if we should add the orbital speed of Earth to that or not. Also keep in mind that the Voyagers reached their speeds thanks to several gravity slingshots, so in theory we could boost our Starship speedball probe even higher than that. If we used a fat Ion engine instead of chemical rockets, we'd get a lot more delta v as well (although over the course of years instead of a few minutes).