Starlink, a division of Elon Musk’s SpaceX, has almost 4,000 low-orbit satellites across the skies, connecting people in remote corners of the Amazon and providing a crucial advantage to Ukrainian forces on the battlefield. The lightweight, high-speed internet system has also proved a new and valuable tool for Brazil’s illegal miners, with reliable service for coordinating logistics, receiving advance warning of law enforcement raids and making payments without flying back to the city.