Origin of the Earth
How the earth was created? This question has baffled all civilizations that ever existed on earth. Each of them wanted to know how the earth was made, and they came up with an answer to his own philosophy, and understand how the world works. Most of them painted a naive idea that the origin of our planet, a supernatural being.
But the most accurate picture of the origin of the earth, supported by empirical evidence in the 20s number built when technology tools to explore this issue in depth, was available. Let us tell the story as well as many years of research in astronomy, geophysics and geology. What follows is a hypothesis that best describes the observed state of the solar system and our beloved country. “Solar Nebula” theory, which I describe here indirectly by observing extrasolar planetary systems tested (planets around other stars), still in the early stages of creation.
It all started with the Big Bang!
If you really want to know where it all started, you should return to the beginning. The origin of the universe itself, the Big Bang theory This story was told in another article of mine, entitled “How the universe was created,” We will soon move to the Big Bang at a time when our galaxy was formed, and the star of the third generation was ours. sun begins to take shape.
Gas Cloud Collapse
A cloud of interstellar hydrogen began to collapse under its own weight, eventually creating the sun. We are in the protoplanetary disk, focusing the central protostar that eventually condensed to surround our solar system.
This cloud of gas and dust containing residues earlier death of stars and supernovae that enriched in heavy elements. As the cloud collapses diminished in size by gravity, he began to turn. Flattened the cloud proved. This cloud is a solar nebula.
Since the central bulge of the protoplanetary disk formed the sun began around the remains of gas and dust condensed. Consider the cloud as a giant centrifuge. It’s not an exact analogy, but take with you. If a centrifuge is running, the heavier elements more massive and discarded. Of even the heaviest elements in the gas cloud was sunk slowly to the edge of the disc, just outside the photosphere of the Sun T Tauri