Yes. Astronomers can see the tell tale traces of familiar atoms such as carbon, oxygen, nitrogen, and molecules such as carbon monoxide in all of the galaxies nearest the Milky Way, and even in the most distant quasars located billions of light years away. In fact, the abundances of the common elements in the most distant galaxies are not that different than what we find in our own Milky Way which suggests that matter in the universe is pretty much the same everywhere, and has been that way for the last 5 - 10 billion years.