Musk proposes AI satellites to sustain earth's habitability for a billion years

Elon Musk has unveiled a plan to ensure Earth remains habitable for approximately 1 billion years, proposing the deployment of autonomous AI satellites powered by solar energy. These satellites, positioned between Earth and the Sun, would be launched using a lunar electromagnetic launcher, reducing the cost of space travel. Musk emphasized that merely replacing fossil fuels with renewable energy would not be sufficient to prevent an 'extremely severe extinction event,' which he estimates occurs roughly every 100 million years. According to Musk, an AI-driven satellite system could regulate sunlight reaching Earth to control global temperatures. He cited a Grok-generated estimate suggesting that under a high sea level rise scenario, about 5% of Florida's land—approximately 1.68 million acres—could face frequent flooding by 2070, leaving humans roughly 50 years to act. This idea is part of SpaceX's broader vision, which includes establishing a self-sustaining Martian colony as an 'insurance policy' against such extinction events. Musk also mentioned that humans might set foot on Mars within the next 5 to 7 years.