A temperature of 142 nonillion degrees—frequently cited as 142 nonillion Kelvin, or 1.42 times 10 to the 32nd power—represents the Planck temperature, which is recognized as the highest theoretically possible temperature limit in modern quantum physics and cosmology. At the Planck temperature, the quantum fluctuations of gravitational fields are as strong as other fundamental forces, meaning our current laws of physics break down entirely, and thermal radiation wavelengths become as small as the subatomic Planck length.
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