Sabine Hossenfelder
@skdh · Sep 21, 2026
Nuclear fusion just got a reality check.
Researchers from MIT checked which fusion designs have a chance of ever making economic sense. They carefully evaluated the construction and maintenance costs and the expected profit made by selling energy. Their calculations suggest that
Elon Musk
@elonmusk
Just use the Sun. Anything we do on Earth is pathetically tiny compared to the Sun.
06:22 AM · September 21, 2026 · 86.1K views
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