How Old is The Earth?

How would you describe the human perception of the size and shape of this world? This knowledge is as old as the ancient Greeks’ mathematics but also as modern as space science. The information about the origin of our planet is not accurate, however.

How would you describe the human perception of the size and shape of this world? This knowledge is as old as the ancient Greeks’ mathematics but also as modern as space science. The information about the origin of our planet is not accurate, however.

In the beginning, says the book of Genesis, the world had neither shape nor form. But what is the beginning? And when?

In 1650, Archbishop James Ussher marked not only the date, but also the time, of creation: approximately 9 am, Sunday, October 23, 4004 BC. This calculation may seem funny now, but in fact, wise men considered it to be the official theory for three hundred years!

One thing is certain. There was an exact point when the world began. It did not just materialize and started spinning. 

Surely, the world is old. Many geologists estimate its age to be at least 4.6 billion years. But before that, our world did not exist. And the mysteries surrounding its birth are enduring puzzles that science cannot solve still.

There is no lacking in theory. Ancient myths described the world as a giant body of liquid. Philosopher Descartes said in 1644 that this was a hot and luminous body, like the sun.

In the 18th century, German philosopher Immanuel Kant and French astronomer Marquis de Laplace hypothesized that the world was a dried up product of a cloudy nebula that circled the sun. Thus, the Nebula Theory was born. And for the first time, scientists saw the inevitable relationship between the the origin of the earth to the larger questions about the evolution of the entire solar system, the stars in general, the galaxies, and the whole universe.

The Nebula theory stated that the solar system came from a nebula, a rotating cloud structure consisting of hot air and dust. Kant formulated the first version of the theory. He explained that there certain circles of clouds broke loose from the central body of rotating air. These circles cooled off and 

Image via Wikipedia

became the planets. And the central body? It became the sun.

This first version had many flaws. Ultimately, though, it branched out into a variety of modifications of the main idea. Today the nebula theory is held to be true.

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