What was the Hadean Eon?

Hadean Eon refers to the earliest geological epoch of Earth's history, since the formation of the planet about 4.5 billion years ago, to the beginning of the Arcan period, 3.8 billion years ago. The name "Hadean Eon" is derived from the word Hades, the Greek word for hell or "invisible". It is commonly assumed that the Hadee landscape was lava, bombed meteorite, lifeless, but some scientists believe that this characterization is somewhat exaggerated and that at least around the end of the Eon, the Eon was not as hellish as some might think. The fact is that at that time we have relatively rare evidence of conditions on Earth in relation to any other era.

The beginning of the Hadean Eon was certainly a hard place. This is when the Earth was nothing but a condensed part of the growing disk that formed an early solar system. Over millions of years of this condensed part began to associate together with a mutual attraction of gravity and wasand created primitive because. Over the period of hundreds of millions of years, up to about 4,100 million years, the country was quite hot. Convections and subductions spewed the surface of the planet and formed a planet of Magmy foam. Heavier elements such as iron, lead and iridium, sank deep below the surface of the planet and formed its core. Lighter elements such as gases have risen to the top in spectacular events. The surface of the Earth was composed of silicates that hovered on the magmatic sea. Somewhere around the late to central part of the Hadean Eon began to cool the ground and outlines of the form of continents. The atmosphere at this point was still missing oxygen.

An important event happened at the beginning of the Hadean Eon, about 4.5 billion years ago. The country was then significantly smaller until it was influenced by the body of the size on Mars Asi. This impact was eliminated a huge part of the bark and sent many quadrillions a ton of material into space that hung in the form of rings for several million years until these rings were condensed into the body that we now call the Moon.

Shortly after the country has cooled, a primitive life began, sometimes about four billion years ago. It is really remarkable how fast the first primitive cells appeared after the country had cooled. There are even some cursory evidence, traces of organic carbon in layers that indicate that photosynthetic organisms may have occurred around this time, about half a billion years earlier than before. However, more evidence is needed.

At the end of the Hadean Eon, Earth - and other planets in the inner solar system - the events of 300 million years were subjected to the late heavy bombing. During this time, the number of asteroids and comet impacts increased significantly. Scientists are not sure why. It is worth noting that while the late heavy bombing meant a significantly increased number of impacts on what we see today, the time interval between the great impacts could still be measured for centuries or millennia. Around this time life had to work in all CO2 atmosphere and oxidize inorganicEnergy materials. Around the end of the Hadean Eon, primitive prokaryotic cells developed glycosis, which is the process of oxidation of organic molecules that set the basis for modern life.