Elements in the periodic table are created in stars through the process of nuclear fusion.

Nuclear fusion involves the merging of atomic nuclei to form a heavier nucleus, releasing energy in the process. In stars, these fusion reactions occur due to the extreme temperatures and pressures present in their cores. The most prevalent fusion reaction in stars is the transformation of hydrogen into helium, which releases a substantial amount of energy in the form of light and heat.

As stars progress through their life cycles, they undergo a series of fusion reactions that generate heavier elements. For instance, when helium nuclei combine, they can form beryllium, which may then fuse with another helium nucleus to produce carbon. This sequence continues, resulting in the formation of progressively heavier elements through various fusion processes.

The formation of the heaviest elements, such as gold and platinum, typically occurs during supernova explosions. When a massive star exhausts its nuclear fuel, it experiences a dramatic collapse, culminating in a supernova explosion that releases an immense amount of energy. In this environment of extreme temperature and pressure, fusion reactions can take place, resulting in the creation of the heaviest elements found in the periodic table.

In summary, the elements found in the periodic table are synthesized through nuclear fusion reactions in stars. Heavier elements are produced as stars evolve, while the heaviest elements are generated during supernova explosions. Understanding these elemental creation processes in stars is crucial for comprehending the composition of the universe and the origins of life itself.