The Temperature of the Universe After the Big Bang

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Question: When I think about the first second after the Big Bang, my understanding is that as we look backward toward t equals zero, the temperature becomes hotter and hotter until we approach infinite temperature. But when I think about what temperature is, I know it has to do with motion. Carlo Raveli tells us the time is the order of events. From that perspective, I wonder if we can say that the temperature becomes time-like as it reaches infinity,. such that the first second might as well have been an eternity.

Welcome to the June 2023 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number -- based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good -- and sometimes group them together if they are about a similar topic. Enjoy!

Post with questions and full transcript: https://www.preposterousuniverse.com/podcast/2023/06/05/ama-june-2023/

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