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He calculated the gravitational energy of an object with a mass equal to the sun's mass and a radius equal to the sun's radius and divided the result by the rate at which the sun radiates away energy.

This calculation yielded a lifetime of only 30 million years.

Prominent theoretical physicists argued, based upon the sources of energy that were known at that time, that the sun was at most a few tens of million years old.

Many geologists and biologists concluded that the sun must have been shining for at least several hundreds of millions of years in order to account for geological changes and the evolution of living things, both of which depend critically upon energy from the sun.

Theoretical physicists battled geologists and evolutionary biologists in a heated controversy over who had the correct answer.

Why was there so much fuss about this scientific puzzle?

The total energy that the sun has radiated away over its lifetime is approximately the product of the current rate at which energy is being emitted, which is called the solar luminosity, times the age of the sun.

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(3) There is no difficulty in accounting for 20,000,000 years' heat by the meteoric theory.The second law of thermodynamics states that heat naturally flows from a hotter to a colder body, not the opposite.Thompson therefore realized that the sun and the earth must get colder unless there is an external energy source and that eventually the earth will become too cold to support life. These questions challenged scientists for a hundred and fifty years, beginning in the middle of the nineteenth century. How does the sun produce the vast amount of energy necessary to support life on earth?

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If a certain kind of pollen is found in an archaeological site, scientists can check when the plant that produced that pollen lived to determine the relative age of the site.

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Because of the distortions and lies spread by fundamentalists about scientific dating there is a need for a centralized source of information on the topic.

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