👉 The past fluid, often referred to as "past water," was a vital component of Earth's early oceans and hydrosphere, existing billions of years ago. This primordial water was not the same as the freshwater we know today; it was likely a mixture of various isotopes, including deuterium and helium-3, reflecting the conditions of the early solar system. The formation of this fluid was influenced by volcanic activity, cometary impacts, and the accretion of water-rich materials from space. As Earth cooled, this past fluid began to condense and accumulate into vast oceans, setting the stage for the development of life. The unique isotopic composition of past water provides crucial clues about the origins and evolution of Earth's hydrosphere, offering insights into planetary formation processes and the potential for life elsewhere in the universe.
