Is there a physical limit to how much heat a scientist can hypothetically engineer, or is it like the speed of light which cannot break boundaries?
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Yes – there is a theoretical limit to how hot something can get. It’s called the Planck temperature, after the German physicist Max Planck, and it equals about 100 million million million million million degrees, or 10^32 Kelvin.
All heat is just molecular movement, and when molecules start moving _that_ fast, conventional physics starts to break down. As a result, we theorize that is the maximum possible temperature, though we have never gotten event close to proving this experimentally.
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