恒星内部的物质状态是完全气化的。由于恒星内部的温度极高， typically exceeding 12 million degrees Celsius, no substance can exist in a solid or liquid state. Instead, all matter is present in a plasma state. This means that at such temperatures, chemical compounds cannot form since all chemical bonds are broken. Furthermore, elements lose their outer electrons, resulting in positively charged ions and freely moving electrons, which balances out to a net neutral charge, hence the term "plasma."
Additionally, under the immense gravitational force, the material at the core of a star is compressed to extreme densities. The particles are packed tightly together, with only the electrical repulsion between the positively charged ions and the negatively charged electrons preventing further compression. This force is known as the degeneracy pressure, and the state is referred to as the degenerate state. This is the condition at the core of a star.详情
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