3 ms·
Reminds me of a really interesting video Kurzgesagt posted recently: https://m.youtube.com/watch?v=JOiGEI9pQBs https://m.youtube.com/watch?v=JOiGEI9pQBs
by hnarn 3y ago
Reminds me of a really interesting video Kurzgesagt posted recently: https://m.youtube.com/watch?v=JOiGEI9pQBs https://m.youtube.com/watch?v=JOiGEI9pQBs
- JumpCrisscross 3y agoThe habitable epoch, when "the cosmic microwave background (CMB) had a temperature of 273–373 K (0–100 °C), allowing early rocky planets (if any existed) to have liquid water chemistry on their surface and be habitable, irrespective of their distance from a star," has always fascinated me [1]. Space itself was room temperature. Our universe would seem to them like the universe on the verge of heat death does to us. To my knowledge, I don't know of any fiction that explores this setting--it's on my bucket list to write. [1] https://lweb.cfa.harvard.edu/~loeb/habitable.pdf https://lweb.cfa.harvard.edu/~loeb/habitable.pdf
- samplatt 3y agoI'm having troubles following the math on that paper. If the beginning of the Habitable Epoch was 10-17MY after the big bang, when was the end?
- hnarn 3y agoNot strictly an answer to your question regarding the math, but the video I linked above does mention an estimate for how long the period might have been.