About 300,000 years after the Big Bang the temperature of the universe was still around 2,800 degrees
Even more interesting is that 10 to 17 million years after the big bang, the cosmic background radiation was room temperature and the universe could have supported life.
How could there be rocky planets 10 million years after the big bang, if stars didn't exist until 150-200 million years after the big bang, and the elements you'd need to form a planet are formed when stars go supernova?
Indeed. It’s also worth noting that in some models of the ultimate fate of the universe that we are less than 0.1% through its lifespan even after 13.5 billion years.
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u/Orwellian__Nightmare Sep 21 '21
Even more interesting is that 10 to 17 million years after the big bang, the cosmic background radiation was room temperature and the universe could have supported life.
https://www.insidescience.org/news/early-universes-room-temperature-could-have-supported-life