If two or more radiometric clocks running at different rates give the same age, this is powerful evidence that the ages are correct. - Brent Dalrymple

These calculations result in ages for the Earth of 4.52 to 4.56 Ga. Probably the best value is 4.54 Ga, found by (Fouad) Tera using the congruency point of the four oldest conformable lead ores. Its value, which is known to within 1% or better, is consistent with the ages of meteorites, the ages of the oldest lunar samples, and the ages of the oldest Earth rocks.

Our current understanding of the chronology of the universe, Galaxy, and Solar System represents the fulfillment of a quest that required more than two centuries of endeavor and surely is one of the most notable and spectacular achievements of modern science.

Invoking unique, supernatural, or extraordinary causes to explain natural history was to Buffon both unnecessary and unproductive.