I think there is actually oxygen in space. maybe not as much as on Earth, but it's still there https://pubs.geoscienceworld.org/msa/rimg/article-abstract/68/1/

I think there is actually oxygen in space. maybe not as much as on Earth, but it's still there https://pubs.geoscienceworld.org/msa/rimg/article-abstract/68/1/55/87574/oxygen-in-the-interstellar-medium?redirectedFrom=fulltext https://pubs.geoscienceworld.org/msa/rimg/article-abstract/6...