Chapter 208 (1/2)
Zhang weisleeps very well, but the impact of what he said at the Nobel Prize ceremony is continuing to ferment, causing heated discussion.
Future technology company, astronaut training base.
In the rest room, Wang Chen is discussing the alien problem mentioned by Zhang Wei with his colleague and friend Huang Xiaofeng.
Wang Chen has always believed in the existence of extraterrestrials. Like Zhang Wei, he even believes that human beings may be the offspring of extraterrestrials of interstellar immigrants, but they were abandoned here for unknown reasons. In order to persuade Huang Xiaofeng, he used his mobile phone to log on to the online disk and opened a piece of information he collected to show Huang Xiaofeng.
”Human beings are the latecomers of the earth. In the earth's 4.5 billion year history, the time of human participation is only a short moment. If the whole earth's history is shortened to 24 hours in a day, then human beings will not appear until 23:58 that night. Little is known about the history of life on earth.
At the beginning of the 20th century, Russian chemist Alexander obalin and British biochemist Haldane of Indian origin put forward the theory of transforming life into students. They believed that the early Earth environment was suitable for simple inorganic molecular combination to form complex organic macromolecules, which led to the final generation of life. In the 1950s, Stanley Miller, an American biochemist working at the University of Chicago, and Harold Yuri, a famous American chemist, conducted a classic experiment, which was later called the Yuri Miller experiment, to test this hypothesis.
In the experiment, Miller and Yuri filled a container with mixed gases, including water vapor, methane, ammonia and hydrogen, to simulate the early Earth atmosphere; and filled a certain amount of liquid water to simulate the early Earth ocean. Then the electrodes are used to discharge the atmosphere, simulating the frequent lightning on the early Earth. About a week after the experiment, a large number of dark sticky ~ thick compounds have appeared in the container. When analyzing these substances, scientists found more than 20 different amino acids.
The Yuri Miller experiment and other subsequent experiments support the theory of chemical origin of life, that is, life is directly generated by chemical action from the early Earth environment.
However, many experts are still skeptical of this theory. For example, Fred Hoyle, a famous British astrophysicist, scoffed at the idea of producing the first life through chemical process, saying that it was like ”a tornado sweeping through a garbage dump and accidentally assembling a Boeing 747”.
The opponents are not without reason.
Life itself appeared on earth very early, a little unexpected. In October 2015, scientists at UCLA announced that the earliest life on earth had appeared at least 4.1 billion years ago, which pushed the previous record forward for another 300 million years. You know, the earth was born about 4.54 billion years ago. This research also means that life has appeared in a short time after the birth of the earth.
It takes a long time for life to emerge through chemical processes. Obviously, the emergence of life on earth seems to be ”too fast”.
In 1984, American female scientist scholl and her colleagues found a dark rock in the Allen mountain area of Antarctica. It was initially determined to be a meteorite, and then it was put into a sealed bag and brought back to the United States. Because this was Wang Chen, who was found in the area that year, replied, ”yes, this is the place I am worried about. If the earth civilization really contacts with the alien civilization, it is very It could be a disaster. For example, Voyager 1, now flying out of the solar system, has drifted to the deep space of the universe 19 billion kilometers away from the earth. If it is captured by aliens, it may attract aliens and pose a threat to us. ”
With that, Wang Chen smiled and shook his head again. ”I think more. At the speed of Voyager 1, it will take 70000 years to reach the nearest star system, Alpha Centauri. If there are aliens here, they are the closest aliens to us. And at our current development speed, maybe 70 thousand years later, they will all become divine civilization. If aliens come to us, it will be a wonderful scene. ”
Huang Xiaofeng is also happy, ”how do I feel that Voyager 1 is a conspiracy? When it is picked up by aliens 70 thousand years later, it becomes bait. Aliens are fish, humans and fishermen! ”
After another conversation, Wang Chen looked at the time and stood up and said, ”enough rest. It's time to continue training. In ten months, the company's first spaceship will be built. Then we will have a chance to go to the moon and Mars to see if there are traces left by aliens.”
……
At the same time, netizens are also talking.
”Zhang Wei's speech is always full of passion. It's interesting to listen to. Unlike other scientists, he specializes in terminology that ordinary people don't understand. And the future life he describes is always full of expectation. ”