When we look up at the starry sky, we can't help but wonder, are human beings the original inhabitants of the earth, or alien life?
From an evolutionary point of view, everything seems to make sense, the origin of human beings is a fish, and the origin of fish may be related to a hot spring under the sea.
But Japan has made a new discovery on an asteroid 340 million kilometers away, maybe we really came from the universe, but we came to the earth by accident, and we took over the earth.
4.6 billion years ago, the Earth was born as nebulae slowly converged, and after the end of the molten state, the Earth began to cool.
4.45 billion years ago, the Earth had a solid crust, and as it cooled, water vapor pooled and fell to the Earth in a liquid form.
4.2 billion years ago, the primordial ocean took shape.
3.8 billion years ago, this stage was very critical, because the origin of life may have originated from an undersea volcano, a large number of inorganic substances in the vicinity of the mouth of the seabed hydrothermal vent, after obtaining energy, actually turned into organic molecules, such as some amino acids and sugars, slowly, these substances combined, after a long evolution, finally gave birth to the first life on the earth, that is, the common ancestor "LUCA".
In order to test this conjecture, in the 50s of the 20th century, American scientists simulated the early environment of the earth, put hydrogen, methane, ammonia and water vapor in a closed container, and after a period of time, organic molecules were really born, so we have reason to believe that as long as certain conditions are met, organic matter can be born, and then life can evolve.
2.4 billion years ago, cyanobacteria on Earth began converting carbon dioxide into oxygen and formed an ozone layer that blocks most of the sun's ultraviolet rays.
900 million years ago, multicellular life began to emerge.
540 million years ago, the earth erupted in the Cambrian explosion of life, which is unimaginable, and marine life gradually moved to the land and evolved various organisms.
Later, there were five mass extinctions on the earth, and the fifth occurred 65 million years ago.
After the dinosaurs disappeared, the overlord of the earth's ecological chain was missing, and all kinds of beasts that were originally suppressed by the dinosaurs were released, and the combat power of the ancient apes was weak and could not participate, but as a result, with the drought of the climate, the African forests gradually faded and were replaced by grasslands, and the ancient apes that lost the protection of the forest could only go to the ground, and at the same time faced a more severe crisis.
The evolution of human beings can be roughly divided into the stage of apes, the stage of humans and apes, and the stage of people who can make tools, after the ancient apes reached the ground, they began to free their hands, because they found that the energy of walking upright only needs 25% of the limbs, when food was scarce, and they were hunted by fierce beasts, so the ancient apes evolved to walk upright, which is also in line with the law of evolution.
However, because the pelvis of the ancient ape was too large, it walked and swayed, so in the stage of being a man and an ape, the pelvis began to gradually shrink, and unexpectedly evolved towards the brain, and finally the brain volume exceeded 800ml, giving birth to higher wisdom.
However, because the pelvis is too small and the baby's head is too large, primitive people can only let the baby be born in advance, and the gestation period is reduced from 21 months to 10 months, and the remaining 11 months are raised in the outside world.
With the gradual awakening of consciousness, primitive people skillfully used props, and successfully survived in the ancient times full of dangers, and with the use of fire, primitive people evolved more rapidly after eating cooked food, and the subsequent history is needless to say, slowly from ancient times to modern times.
From the results of the current scientific research, it is true that humans and other life on Earth are indigenous, but if we go back to the source, what if the organic matter is not native to the earth?
Is it possible that organic matter is an extraterrestrial product?
On December 3, 2014, the Japanese probe Hayabusa2 went to the asteroid Ryugu, 340 million kilometers away from the Earth, to carry out a probe sampling mission.
In June 2018, Hayabusa2 successfully arrived at the Ryugu asteroid.
In February ~ April 2019, Hayabusa2 launched a two-month sampling mission.
On December 6, 2020, Hayabusa2 dropped the collected samples into the Wumera Proving Ground in southern Australia to complete another mission.
When the Japanese scientists opened the package sent by the "Hayabusa2", they were really shocked, because there was a small piece of aluminum foil inside, which was man-made, and there was no aluminum foil on the equipment of the "Hayabusa2", there was no accidental drop during the collection, and then it was accidentally collected.
Of course, this article is not about aluminum foil, but about the discovery of liquid water and gas in the samples by Japanese scientists, which is not unusual, and the most shocking thing is that there are about 20,000 organic compounds and materials that make up proteins in the samples.
I also deliberately went to read the encyclopedia of this information, it is true, let's go back and look at the origin of life on the earth, is there a possibility that the organic matter in the universe is attached to the small celestial body, and then the small celestial body hits the earth, and these organic matter evolved life in the primordial ocean?
That is to say, if the original organic matter is a product of the earth, and humans and other organisms are native to the earth, and if the organic matter is carried by extraterritorial celestial bodies, then all the organisms on the earth can also be said to be extraterrestrial life from the source, and occupy the earth.
All of this is hypothetical, after all, no one can find out where the original organic matter came from, but the new discovery of Japanese scientists has undoubtedly added a whole new possibility.