High Quality Content by WIKIPEDIA articles! Nucleocosmochronology, also known as cosmochronology, is a relatively new technique used to determine timescales for astrophysical objects and events. This technique employs the abundances of radioactive nuclides in a way that is very similar to the use of C14 in dating archeological samples, save that the elements measured are typically uranium and thorium. Nucleocosmochronology has already been successfully employed to determine the age of the Sun (4.57±0.02 Ga, i.e., 4.57x109 years) and of the Galactic thin disk (8.3±1.8 Ga), among others. It has also been used to estimate the age of the Milky Way itself, as exemplified by recent study of the halo star CS31082-001. Limiting factors in its precision are the quality of observations of faint stars, and perhaps more importantly, the uncertainty of the primordial abundances of r-process elements.

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