which is one physical property that all stars have?\nthey are made of gases.\nthey shine very…

which is one physical property that all stars have?\nthey are made of gases.\nthey shine very brightly.\nthey have a triangle shape.\nthey contain iron in their cores.
Answer
Brief Explanations:
Stars are primarily composed of hydrogen and helium gases. While some stars may not shine very brightly (e.g., red dwarfs), and not all stars have a triangular shape (stars are mostly spherical - like due to gravitational forces), and not all stars have iron in their cores (iron - core formation occurs in the late stages of massive star evolution). The most fundamental and universal physical property is that they are made of gases.
Answer:
They are made of gases.