This has to be at minimum a 2nd generation star because we have heavy elements in this solar system. I am under the impression that there is a consensus we are a 3rd generation star system, but I have no idea if 3rd is the agreed upon generation or if we are just at minimum 3rd generation (maybe we are 4th or 5th, I don’t know enough about stellar lifespan to say).
So tracing the origins of the matter in our solar system back to the big bang, do we know what happened? This is my crude understanding:
Big bang resulted in large amounts of hydrogen, some of which formed a star (obviously there have been trillions of stars in the universe, I’m just talking about the stars which have created the matter in our solar system). That star went nova, and formed a molecular cloud. That cloud formed a second generation star. After a few billion years that star went supernova and created another molecular cloud 60 light years across. Our current solar system was formed about 5 billion years from that gas cloud.
I’m guessing that is about right, but do we know anything about the timeline (how long did these previous stars last, billions of years, millions, etc?) Do we know if nearby stars like proxima centauri were formed by the same gas cloud that formed our current solar system?
Did the 60 light year across molecular cloud that formed our solar system about 5 billion years ago all come from a single star that went nova?