* Oldest Stars: The oldest stars in the universe are thought to be around 13.8 billion years old, almost as old as the universe itself. These stars are typically small, faint, and made up mostly of hydrogen and helium.
* Our Sun: Our sun is about 4.6 billion years old, which makes it a middle-aged star.
* Young Stars: Some stars are relatively young, only a few million years old. These stars are often larger, hotter, and brighter than older stars.
* Stellar Lifespans: The lifespan of a star depends on its mass. Larger stars burn through their fuel much faster than smaller stars, so they have shorter lifespans. A star like our sun is expected to live for about 10 billion years.
So, while it's impossible to give one age for all stars, it's safe to say that most stars are billions of years old.
