How did we determine that the sun is ~4.6 billions years old?

Question

I love astronomy stuff, not an expert at all, but have always been so fascinated by it. I am totally baffled by how we seem to claim that we can approximate how long the sun has been around. Like the margin of error for a number like that is crazy…. totally incomprehensible to me. Say that we are 25% off, that means we are over 1 billion years off. So, how do people confidently claim that the sun is 4.6 billion years, rather than 3 billion or 10 billion?

In: 1140

Answer 1

Here is an overview of methods for dating the sun, including how age limits were set:

http://solar-center.stanford.edu/FAQ/Qage.html#:~:text=Dating%20the%20Sun%20is%20an,dating%20of%20the%20oldest%20meteorites.