👉 The earlier fluid, often referred to as the primordial soup or simply "fluid," is a theoretical concept describing the early, highly dynamic mixture of gases and liquids that existed in the universe shortly after the Big Bang. This fluid was composed primarily of hydrogen, helium, and trace amounts of lithium, with minimal heavier elements. As the universe expanded and cooled, these gases condensed into the first atoms, a process known as recombination. This primordial fluid then played a crucial role in the formation of the first stars and galaxies, setting the stage for the complex chemical evolution that would follow.