Billions of years ago, early supernovas blew a lot of carbon into the galactic halo. https://phys.org/news/2025-01-carbon-bodies-left-galaxy-cosmic.html https:

Billions of years ago, early supernovas blew a lot of carbon into the galactic halo. https://phys.org/news/2025-01-carbon-bodies-left-galaxy-cosmic.html https://phys.org/news/2025-01-carbon-bodies-left-galaxy-cosm...