However, the road of evolution is narrow and full of variables. In the long years, countless creatures gave up halfway and retired from the historical stage forever.
With clever brains, flexible hands and the courage to explore the unknown, human beings stand out from many mammals, establish a splendid civilization and become a well-deserved "overlord" of the earth.
/kloc-in the second half of the 0/8th century, the development of human beings ushered in a historic turning point, and machines replaced labor to open new doors. As a result, the development of science and technology has entered the "fast lane". With the unremitting efforts of many scientists, Armstrong took a big step to the moon only after more than 200 years.
Technology not only expands the scope of exploration, but also enables human beings to "go back" in the long river of time, so that human beings can roughly understand what happened on the earth tens of thousands, hundreds of thousands or even hundreds of millions of years ago.
However, as Socrates said, the more you know, the more you will feel ignorant. Looking back at history, although we know the answers to many questions, at the same time, some new mysteries have emerged, such as prehistoric civilization.
Many people have suspected that human beings may not be the first intelligent creatures on the earth, and human civilization is not the first earth civilization. That is to say, on the earth before the appearance of human beings, there may be intelligent creatures not inferior to human beings, and they have also established civilization like human beings.
Of course, this view of subverting cognition is just a conjecture, which has not been universally recognized, and even the mainstream of the scientific community has denied and criticized it.
However, this did not shake the confidence of the supporters of "Prehistoric Civilization" because they insisted that prehistoric civilization was inevitable. It is only because they live so far away from us that the traces they left were ruthlessly erased by time, and we didn't find the articles and traces they left behind.
Some supporters even bluntly said: If humans suddenly disappear, 1 10,000 years is enough to erase the traces of human existence on the earth.
The question is, did prehistoric Wen Mingzhen ever exist? And how long will it take modern people to find their trace? More importantly, to what extent can the traces of civilization disappear in 6.5438+0 million years? The answer is actually cruel.
Of course, "cruelty" is for supporters, because 1 10,000 years can't erase the traces of human existence. If a civilization is born later, or an alien civilization comes to the earth, they can easily find evidence of human existence.
As we all know, silicate rocks can be preserved for a very long time because of their unique physical and chemical properties. If some information is engraved on it, it can be preserved for at least one million years.
You may think that it has been preserved for a long time, but compared with some artifacts, it is immediately dwarfed and defeated.
For example, femtosecond laser crystal lattice can store the data engraved in it for more than 300 million years. The iron nanoparticles-carbon nanotubes composite developed by the University of California can keep the data for nearly 654.38 billion years. Femtosecond laser developed by Southampton University can etch glass nanostructures, and even save data of more than 654.38+0.3 billion years.
In space, 654.38+100,000 years is not worth mentioning, because this "point" time can't make the man-made objects in the earth orbit have a great orbital attenuation, and there will still be a large number of human object fragments orbiting the planets such as the earth and the sun.
1On May 4th, 976, NASA launched a satellite named "Lagos-1". Its main function is to verify the "continental drift theory" and provide accurate measurement of satellite position relative to the earth.
This satellite was mentioned because it was set to fall into the atmosphere after 8.4 million years, and it also carried a time capsule designed by carl sagan, hoping to send a very precious archaeological data to the civilization that existed on the earth at that time.
1 10,000 years is not only indifferent to the artificial detectors near the earth, but also insignificant to those detectors that have set foot on the journey of leaving the solar system.
According to scientists' prediction, if there is an alien civilization in the universe, the information carried by pioneers 10 and 1 1 will be discovered and interpreted within 800,000 to 8 million years.
The information carried by Voyager 1 and Voyager 2 will be discovered in one billion years.
At the same time, scientists also said that if there are no special circumstances, these four probes leaving the solar system can fly in the universe 1 E20 years, that is, 1 and there are 20 zeros after one trillion years.
Let's look back at the surface of the earth. In 654.38 million years, all man-made buildings on the earth will only be partially weathered, and their traces will not completely disappear.
There will still be obvious traces of exploitation in most mineral deposits, and it will take about 50 million to 400 million years for the oil mined by human beings to return to the level before human exploitation.
A large number of plastics made by human beings and animal bones buried deep underground will become very unique fossils, so that future generations can clearly find it.
Even after 100 million years, the building foundations and underground tunnels left by human beings and the traces left by coastal cities can still be clearly found.
In addition to "dead things" such as buildings and mineral deposits, 1 10,000 years cannot erase the information of "living things" left by human beings. For example, coral reefs destroyed by humans in the ocean will take at least 2 million years to recover.
At present, scientists have written all kinds of data into the genes of Deinococcus radiodurans through DNA coding and released them into nature. These special data left by human beings will evolve accordingly.
Because of their super survival ability, once they accidentally enter the universe, they are likely to drift forever with some cosmic dust. If they are lucky enough to fall into a planet suitable for reproduction, they may create a new biosphere, which will be the biggest trace left by mankind.
Generally speaking, if human beings suddenly disappear, it will be impossible to completely erase the traces of existence in 65.438 billion years or even 65.438 billion years, which fundamentally shows that there is no so-called "prehistoric civilization" on the earth.