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From across the galaxy and across the Universe, from stars (including our Sun), pulsars, black holes and more, space is flooded with high-energy particles known as cosmic rays.

Most frequently, cosmic rays are protons, but a handful are heavier ions and a few are even humble electrons.

From diamonds to nanotubes to DNA, carbon is indispensable for constructing practically all of the most intricate structures we know of.

Most of the carbon in our world comes from long-dead stars, in the form of Carbon-12: carbon atoms containing six neutrons in their nucleus.

Other organic remains also contain carbon, like leather, wooden tools, seeds or other food and sometimes bones.

It was developed in the 1950s by a team of scientists under Professor Willard F. Libby received the Nobel Prize in Chemistry "for his method to use Carbon-14 for age determinations in archaeology, geology, geophysics, and other branches of science." in 1960.

First a word on how the name of this method is written.

The dating using any kind of isotopes is based on determining the ratio between stable isotopes and non-stable isotopes.

If we know where we started, and if we know the half-life (amount of time it takes for half of the isotopes to break down) we can compute the necessary time to reach todays state. Now lets have a short look at archaeological daily life.

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Live on earth is based on carbon, which is gathered from food or from the air.

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