* Stellar evolution models: These models predict how stars change over time based on their mass, composition, and other factors. By comparing the Sun's current state to these models, we can estimate its age.
* Radioactive dating of meteorites: Meteorites are remnants of the early solar system, and some contain radioactive isotopes that decay at known rates. By analyzing these isotopes, we can estimate the age of the solar system, which is assumed to be roughly the same age as the Sun.
Current estimates suggest that the Sun is about 4.603 billion years old. This age is constantly being refined as our understanding of stellar evolution and the early solar system improves. However, the exact age of the Sun will always remain uncertain.
