The first atoms fused into molecules about 400,000 years after the big bang, and now we’ve seen signs of those earliest types of molecule in a distant nebula
Source:
https://www.newscientist.com/article/2199778-weve-found-the-first-type-of-molecule-to-form-after-the-big-bang/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home