Musk: Mine lunar silicon to build AI satellites — Earth launches can't scale to 500-1,000 TW a year
elonmusk · x · 2026-10-25
Elon Musk laid out how AI satellites could be built on the Moon: lunar soil is roughly 20% silicon, so it can be mined and refined in situ to make solar cells, with radiators made from the Moon's abundant aluminum. Chips are light enough to ship from Earth, and may eventually be produced there too. He compares it to a video game level — hard but not impossible — and argues 500 to 1,000 terawatts per year could never be launched from Earth. The quoted NASA Artemis lead context notes SpaceX is rebuilding Starship between flights at a pace "unthinkable" by industry standards, with Flight 14 (V3) flying in late September and Flight 15 potentially returning to the launch site for a catch.
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