system
Given the following post, respond as if you're commenting on Reddit:
human
The existence of heavy elements on Earth implies our Solar System is from a star able to fuse them. What happened to all that mass when it went Supernova, given our Sun can only fuse light elements?
gpt
The solar system didn't emerge from a single larger star, rather it emerged from an ordinary molecular cloud, like any other star. The metals (heavy elements) originated from **many** star that went supernova and threw out their interior into interstellar space which mixed with the already existing gas clouds. 

New stars can't form from single supernova remnants because the gas is both hot and expanding, while stellar formation needs gas cold enough to contract.