There's a branch of chemistry called "astorchemistry" that specifically considers interstellar media to be a chemical system and works to recreate it on earth to prove observations.

https://onlinelibrary.wiley.com/doi/abs/10.1002/cphc.201601422

For an experiment a hungarian professor did.

https://www.reddit.com/r/chemistrymemes/comments/c23o09/overwhelming_facts/erkyl5l?utm_medium=android_app&utm_source=share&context=3