How can carbon 14 be used in astronomy?
Radioactive carbon-14 is used for determining the age of organic remains in archaeological sites.
Carbon-14 is a radioactive isotope of carbon that might exist as a
billionth part in organic remains in archaeological sites.
This process of finding the age of the material is called carbon
The models used are called exponential decay models. The
parameters ( usually 2) are decided from the current decay levels.
There are limitations, like within million years of age, for this dating..
Reference: wiki carbon 14
In astronomy, this can be used for dating of materials on the Earth
and other space bodies. Unmanned spacecrafts, landing on such
distant solar orbiters, like planets, asteroids and comets, could be
directed from here, to scoop samples and do experiments on dating
of the organic materials, if any.,