In the silent vacuum of space, five autonomous robots churn through the lunar surface, digging up a loose layer of rock and dust and leaving rows of uniform tracks in their wake. Stopping only to recharge at a central solar power station, the car-sized machines process the lunar dirt internally to extract a type of helium so rare on Earth that a palm-sized container is estimated to be worth millions.
The Starship rocket system splits in two after takeoff. The upper spacecraft would head to Earth orbit to serve as that depot, ready to carry nothing but fuel. The towering Super Heavy rocket booster, meanwhile, would return to the launch site so it can be reused.