Homonym: Star (Celebrity)
A star is a massive, luminous sphere of plasma held together by gravity. Stars are primarily composed of hydrogen and helium and undergo nuclear fusion, producing light and heat. They are the building blocks of galaxies and play a crucial role in the universe's structure and evolution.
The life cycle of a star includes various stages, from formation in nebulae to eventual death, which can result in phenomena such as supernovae or black holes. Famous examples of stars include Sun, the closest star to Earth, and Sirius, the brightest star in the night sky.