What is the approximate age of earth?

In their experiment Miller and Urey simulated what they believed to be the components of Earth's early atmosphere and provide an energy source (heat and electrical spark). Miller's experiment produced many amino acids and other organic compounds. read more

The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 10 9 years ± 1%). This age may represent the age of the Earth’s accretion, of core formation, or of the material from which the Earth formed. read more

By using not only the rocks on Earth but also information gathered about the system that surrounds it, scientists have been able to place the age of the Earth at approximately 4.54 billion years. read more