Star

A star is a massive, luminous sphere of plasma held together by its own gravity. At its core, nuclear fusion reactions convert hydrogen into helium, releasing immense amounts of energy in the form of light, heat, and radiation. This process, known as stellar nucleosynthesis, is the fundamental source of energy for stars and the creation of heavier elements.
Stars are born from clouds of some interstellar gas and dust known as nebulae. Through a gravitational collapse for some reason, these clouds condense into dense cores that eventually ignites a giant nuclear fusion and giving birth to a new star.
The lifecycle of a star depends primarily on its mass. Massive stars burn through their fuel rapidly and live short, explosive lives, often ending in spectacular supernovae. Smaller stars, like our Sun, burn more slowly and have longer lifespans, eventually evolving into red giants and then white dwarfs.
Category:Cosmology
Category:Main