[seszett]

The universe is about 15 billion years old, and chemistry didn't start with the formation of Earth.

[wingspar]

Chemistry in earth certainly started with the formation of earth.

Are you suggesting that abiogenesis didn’t start on earth, but self-replicating molecules started evolving in earths protoplanetary disc?

Serious question, haven’t encountered that theory before. It’s kinda panspermia-lite.

[mongoosled]

Kurzgesagt did a video on this recently https://m.youtube.com/watch?v=JOiGEI9pQBs

[lovemenot]

I believe you may discussing at cross-purposes.

Presumably like your parent, I believed this was a discussion about the probability that life has originated elsewhere in the galaxy / universe, independently of life on Earth.