Nucleosynthesis is primarily explained through the processes of the Big Bang and supernovae, as these events are responsible for the formation of elements in the universe. The discussion highlights the availability of resources, including an Astrophysics forum on PF where users can explore related topics. Key educational materials are provided, such as links to HyperPhysics and various university courses focused on nuclear astrophysics. These resources offer comprehensive insights into the mechanisms behind nucleosynthesis. For a deeper understanding, engaging with these materials and forums is recommended.