Mostly meteorites, and using radioactive dating techniques, specifically looking at daughter isotopes, scientists have determined that the Solar System is 4.6 billion years old.



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Age of the Solar System
The age of our solar system is estimated to be around 4.6 billion years. This age is determined based on various scientific methods and evidence gathered over the years.

Evidence from Meteorites
- One of the key pieces of evidence used to determine the age of the solar system is the analysis of meteorites.
- Certain types of meteorites contain radioactive isotopes that decay over time at a known rate. By measuring the ratios of these isotopes in meteorites, scientists can calculate the age of the solar system.

Formation of the Sun
- The age of the solar system is closely tied to the age of the Sun, which is estimated to be about 4.6 billion years old.
- The solar system is believed to have formed from a giant molecular cloud about 4.6 billion years ago, with the Sun forming at the center and the planets and other celestial bodies forming around it.

Planetary Formation
- The formation of the planets, moons, asteroids, and other objects in the solar system occurred gradually over millions of years through processes such as accretion and gravitational interactions.
- The age of the solar system is also determined by the ages of the oldest rocks on Earth and the Moon, which provide further evidence for the 4.6 billion-year timeline.
In conclusion, the age of our solar system is estimated to be around 4.6 billion years based on various scientific methods and evidence from meteorites, planetary formation, and the age of the Sun.