In the course of human development, many people have been pursuing life extension, but the final result is just a void, perhaps you can rely on science and technology to prolong life for a period of time, but this is also a short time, it is impossible to continue to last, immortality may not exist at all. Hawking made three prophecies before his death, the last of which was about human life, in which he said that humanity might achieve eternal life in 2045.
In view of Hawking's prestige, many people also feel that human beings may achieve immortality in the future, but more people believe that immortality does not exist, and even if it can be immortal, it will be the beginning of human self-destruction. There are many kinds of creatures on the earth, eighty-six percent of the creatures on land alone have not been discovered, not to mention the ocean, compared to the lifespan of different organisms, it is likely that there is a creature with a long and frightening lifespan, such as the lighthouse jellyfish.
The biggest factor affecting human health is the lesion of the organ, with the 3D printing technology more and more powerful, scientists can even rely on 3D printing technology to print out transparent human organs, which means that when the organ lesions, you can use the printed organs instead, which can save many people's lives, although this does not represent immortality, but to a certain extent is enough for human life extension.
In a series of experiments to study whether humans can live forever, there are experiments that prove that human cells have no way to divide indefinitely, a cell will stop after fifty times of division, if calculated according to the cell division cycle, human life expectancy is 120 years old, so this is likely to be the longest lifespan of human beings. Human life expectancy is rising with the advancement of science and technology, and by 2019, the average life expectancy of human beings has reached 69 years old, and it is still rising.
Birth, old age, illness and death are the laws of nature, so eternal life does not exist, and perhaps there will be a way to retain human consciousness in the future, which is also a kind of alternative immortality, but it is not counted in the strict sense. Even if human beings can be immortalized, the problems that erupt may lead to the demise of mankind, perhaps eternal life is a beautiful expectation, and life is brilliant precisely because there is a time limit, if not, then life is just survival.
Material source: (All Things Science Museum), only for communication purposes, if there is infringement, please contact by private message.