Limitless Podcast AI In Space: Google and SpaceX's Wild Plan To Fix Our Energy Crisis
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Dec 3, 2025 What if GPUs could be launched into space? The conversation dives into energy as the core challenge for AI, emphasizing the potential of solar power in orbit. Key tech giants are all in on this radical idea, from StarCloud's first prototype to Elon Musk’s ambitious vision of solar satellites. The hosts explore the economic implications, with a focus on reducing launch costs and addressing radiation challenges. They also ponder the balance between Earth-based solutions and the necessity of orbital data centers. It’s a thrilling look into the future of AI and energy!
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Energy Is The Real Bottleneck
- Energy, not GPUs, is the constraining resource for large-scale AI today.
- Without abundant power, GPUs remain idle and AI scale stalls.
Space Offers Far Denser Solar And Easier Cooling
- Operating solar arrays above the atmosphere yields roughly 3–8x more energy than on Earth.
- Space's vacuum also simplifies radiative cooling compared with terrestrial methods.
GPUs Collecting Dust At Microsoft
- Satya Nadella said Microsoft has hundreds of billions in GPUs sitting idle due to power constraints.
- Josh and Ajaz use this to illustrate data centers built but unpowered, collecting dust.
