this post was submitted on 12 Feb 2026
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If that blows your mind then think about this: As the universe expanded after the Big Bang, it cooled from unimaginably high temperatures. In principle, this suggest that there could have been a very short window much later, tens of millions of years after the Big Bang, when the background temperature of the entire universe was capable of sustaining life everywhere. Some physicists have suggested this might have created a brief, universe-wide “habitable epoch,” though this remains theoretical.
I'm not an expert, so this is probably not a muture understanding, but it's cool to imagine a universe where life was incredibly abundant.
Well, "life as we know it". But for all we know energy rather than matter-based beings could have existed more readily back then, and perhaps struggle to exist now under lower density conditions. Thereby making that earlier era more habitable for their type of life, even as our current era is more habitable for our own type.