I know that threads with a subject like that are hard to follow. Not everybody is a scientist and not everybody has an interest in chemical evolution,
however alot of members are supporters of the theory of evolution and the document above is all about evolution and it implication in a scale way
larger than humans and our planet.
Maybe will be easier for ATS members to understand the importance of this document if I try to explain in a simple way what is the Chemical Evolution.
Chemical evolution describes a variety of theories that posit the view that life originated through purely chemical transformations of nonliving
matter. Starting from primordial simplicity such chemical transformation are supposed eventually to have brought about a living cell. In other words,
Chemical Evolution starts by looking at the elements. It goes through the history of their discovery, classification and structure and then goes on to
look at their origin and their distribution throughout the universe.
As the theory goes on, the chemical history of the universe began with the generation of simple chemicals in the Big Bang. Hydrogen and helium, the
two lightest chemical elements, were and still are the most abundant elements in the universe. All stars derive their energy through the nuclear
fusion of these light elements into heavier elements. Once stars have exhausted their energy supply by converting all of their hydrogen to helium, the
star cools and contracts, with the increased pressure from the contraction initiating the fusion of helium to form carbon.
See the picture below of a supernova which can give an idea of what the study is dealing with.
