Explain potassium 40 dating

Based on our study of meteorites and rocks from the Moon, as well as modeling the formation of planets, it is believed (pretty much well-established) that all of the objects in the Solar System formed very quickly about 4.56 billion years ago.

When we age date a planet, we are actually just dating the age of the surface, not the whole planet.

We have rocks from the Moon (brought back), meteorites, and rocks that we know came from Mars.

We can then use radioactive age dating in order to date the ages of the surfaces (when the rocks first formed, i.e. We also have meteorites from asteroids and can date them, too.

This decay, or loss of energy, results in an atom (element) of one type, called the parent nuclide transforming to an atom of a different type (another element or another isotope of the same element), named the daughter nuclide.

These are the surfaces that we can get absolute ages for.

For the others, one can only use relative age dating (such as counting craters) in order to estimate the age of the surface and the history of the surface.

Earth) and what could happen to Earth in an extreme case, etc.

By studying other planets, we are learning more about our own planet.The effects of impacts and how they might affect us here on Earth, global climate change (Venus vs.

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