If uranium-238 is formed in a star (supernova), how can it be used to date the age of the earth? Aren’t you dating the age of the supernova? What about earth’s formation creates a marker that can be dated with isotopes?

Question

So how do you get 4.5 billion years by dating isotopes that existed long before the formation of the earth?

​

Edit: I’m not creationist trolling. I believe the #, just trying to learn about the sicence.

In: 180

Answer 1

Sidenote: It is now widely thought that heavy elements like uranium were mostly produced in neutron-star collisions, rather than in supernova explosions.

https://en.wikipedia.org/wiki/Nucleosynthesis