thanks @blairwitch44 good response. Recent research modelling the formation of Galaxies suggests at least 50% of our atoms were indeed formed in other galaxies and travel here on the cosmic wind.. I find that fact alone quite incredible.. All of the billions of galaxies slowly interacting with each other. The structure of the Universe looks more and more like a big hyper brain

here's the structure of the universe and at least half of the matter or information is exchanged with the nearest neighbours. Incredibly interesting