This hypothesis suggests that amino acids may have arisen from simple inorganic compounds through a series of chemical reactions. Scientists postulate that conditions such as high temperatures, volcanic activity, and the presence of specific catalysts, possibly including metallic ions or minerals, could have facilitated the formation of organic molecules, including amino acids, from simpler precursors.
Hydrothermal vents on the ocean floor emit hot, mineral-rich fluids that could have provided a favorable environment for the origin of life. These vents spew out various gases and minerals, including hydrogen, methane, and iron sulfide. It's suggested that the chemical reactions occurring in and around these vents could have facilitated the formation of organic molecules, including amino acids.
In 1976, the carbonaceous meteorite Murchison fell in Australia, containing various organic molecules, including a diverse array of amino acids. The presence of these compounds in meteorites suggests the possibility of their extraterrestrial origin and delivery to the early Earth. Scientists believe that similar events could have contributed to the pool of organic molecules available on the early planet.
