What is the definitoin of star?

Answer 1

A star is a luminous celestial body made up of plasma, primarily hydrogen and helium, that generates energy through nuclear fusion in its core. This process produces light and heat, enabling stars to shine brightly in the night sky. Stars vary in size, temperature, and brightness, and they are fundamental components of galaxies. Examples include our Sun, which is a medium-sized star, and other types like red dwarfs and supergiants.