alt Hacker NewsI know one theory proposes comets seeded earth with essential materials. But what seeded comets?? It’s just chance with extra steps, no?
Replies
There's a theory that at the very beginnings of the universe, as it cooled down, there was a period where the average temperature of the universe was between 0-100º C, meaning the whole universe was within a "habitable" temperature range, and this could have supercharged the creation of the building blocks of life. I think I learned about it on a Veritasium video... Maybe someone knows which one? :)
When Carl Sagan said, "The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself" he was poetically accurate. The comets are seeded with the remains of untold countless exploded stars.
It's sorting and mixing. Comets, asteroids, and planets all had different factors governing their formation (sorting). When comets or asteroids hit planets, you get a mixture of those different compositions.
God
The big bang did. And following it, supernovae. But there's a lot we don't know and science is always advancing!
For example, JWST observed early galaxies are both larger and more diverse materials than we expected. Means there's something new to learn!