With the discovery of radiometric dating, it became possible for the first time to attempt precise figures.Radiometric dating works on the principle that certain atoms and isotopes are unstable.
Radiometric dating a christian perspective by dr roger c wiens
Even in the case of very long half-lives, modern scientific instruments are now accurate enough to give very fine readings.
We usually hear of Carbon 14 dating, which is very important in archaeology.
The Christian Creationists have criticised it on the grounds that it is innacurate.
Different world-views have different time-scales as regards the history of the Earth and the universe.
Buddhist, Jain and Hindu cosmologies describe the universe as a never-ending series of cycles each lasting millions or billions of years.