Princeton Plasma Physics Lab on Instagram: "Feel the heat! 🔥 The Princeton Plasma Physics Laboratory’s National Spherical Torus Experiment-Upgrade (NSTX-U) heats plasma — the fuel for fusion — to 100 million degrees Celsius. That’s 18,000 times hotter than the surface of the sun. NSTX-U’s flexible heating systems create and heat plasma to such high temperatures using beams of high-energy neutral particles and high-power radio waves. NSTX-U’s compact design means it can heat plasma using less en

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