After completing the calculations for this new type of carbon composite material, there are less than two days left before the 21st New Year.
After bringing some data back to where he lives, Xu Chuan is also preparing to celebrate the New Year.
Due to the ban on fireworks and firecrackers here in Jinling, the flavor of the New Year in the city is far less intense than in the countryside.
But for him, it was already very satisfying.
The family had a reunion dinner together and watched the Spring Festival Gala. The days were dull but warm.
.......
"Brother, do you think there will be life on Mars?"
After dinner, when the family was relaxing in the living room watching TV, Xu Xiao suddenly poked his head out from the other end of the sofa and asked curiously.
"Why are you asking this all of a sudden?" Xu Chuan asked casually without looking back, his eyes falling on the Spring Festival Gala sketches. With the withdrawal of the previous teachers, the Spring Festival Gala sketches are now becoming more and more boring.
"Hey, the United States has landed on Mars." Xu Xiao handed over the tablet in his hand and said.
Xu Chuan turned his head curiously and took the tablet. A piece of news caught his eye.
[NASA’s “Perseverance” Mars rover successfully landed on Mars and sent back its first photo]
Seeing this news, Xu Chuan moved his fingers with interest and learned about the information in detail.
"...According to foreign media reports, NASA's "Perseverance" Mars rover arrived at the red planet after a seven-month journey. It has successfully landed on the surface of Mars and captured and sent back the first batch of images of Mars.
Becoming NASA’s fifth Mars rover to successfully land on Mars.”
"It is worth mentioning that due to the thin atmosphere of Mars and the long distance between the ground and the fire, the probe must complete the deceleration and landing independently, which is extremely difficult. Previously, NASA predicted that the probability of Perseverance landing safely was only 40%."
"In addition to collecting geological and climatic features of Mars to pave the way for human exploration, the Mars probe will also focus on astrobiology, which is the study of life throughout the universe."
"At present, the "Perseverance" has successfully landed in the Jezero Crater, which is about 45 kilometers wide in the northern hemisphere of Mars. (jezero asa believes that this place once had abundant water resources, and hopes to use the instruments carried by the Perseverance to detect possible preservation of organic matter here.
Molecules and other potential signs of microbial life.”
"...."
"Brother, do you think there were Martians on Mars before? Is there any life on it now?"
At some point, Xu Xiao came over from the other side of the sofa, nestled next to Xu Chuan, looked at the tablet and asked with interest.
Hearing this question, Xu Chuan shrugged and said: "I'm afraid you need to go to Mars to investigate in person to know this question."
"However, judging from the geological structure of Mars and past data, I think the probability that life exists or has existed on Mars is quite high."
"If its core does not cool down, the magnetic field can protect the surface ecology, and there may be a chance to derive advanced life."
Xu Chuan had some understanding of the situation on Mars, but not much.
This is indeed a planet very similar to the Earth. The difference is that the metallic core of Mars has cooled, there is no flow of liquid iron, and the magnetic field has disappeared, causing the surface to become barren under the long stellar wind.
I don’t know if there was life in the first place, but it should be gone now.
Even if there are, it is estimated that they are at most some microorganisms living in canyons, craters and other abyss areas where they can avoid the stellar wind.
Hearing this, Xu Xiao suddenly looked forward to it and said, "It would be great if I could catch a Martian and dissect him."
Xu Chuan: "..."
He only said that the probability of existence of microbial life on Mars was quite high, but he did not say that there were Martians.
And if there are really Martians on Mars, whoever dissects them won’t know yet.
After all, being able to hide it from being discovered by human civilization on earth shows that the other party's technology has reached a very high level.
But he didn't care, just thinking that the girl was imagining it, and asked with a smile: "How is your study going?"
Like him, this girl is also a talented player. Perhaps due to his influence, she successfully graduated from college in two years and has officially become a graduate student.
Speaking of this, Xu Xiao became interested and said excitedly: "Brother, our college and the McGovern Institute for Brain Science at MIT have jointly launched a 'brain wave data analysis project'.
I applied to study, but I don’t know if I can be selected.”
"Brain wave data analysis?" Xu Chuan glanced at Xu Xiao curiously.
"That's right! It's the one you told me last time."
Xu Xiao nodded and continued: "It is to establish a complete database for human brain waves, then analyze these brain waves, and use brain waves to conduct human-computer interaction."
Hearing this, Xu Chuan touched his chin and asked with interest: "Are your two schools, Shuimu and Massachusetts? If I remember correctly, the analysis of brain waves should be a pretty huge workload, right?"
Xu Xiao: “Currently it seems that it’s just our school and Massachusetts, but I heard that Peking University also wants to join in, but I’m not sure about the details.”
After a pause, she remembered something, then she puffed up her cheeks and looked at Xu Chuan, complaining: "Brother, when I really got into this industry, I realized that you really screwed me up when you fooled me last time.
Now I've fallen into a pit, no, fallen into a bottomless abyss and can't even climb out."
Xu Chuan smiled and said, "How could it be? I'm not you. I never cheat people."
Xu Xiao ignored him, sighed and continued: "It is too difficult to do human-computer interaction through brain waves."
"Brain waves are also divided into many types, such as the 'human active neural information database', 'brain wave information molecular imaging database', 'eeg, erp, fnirs, ecog neural information database' and so on."
"To fully analyze these things is no less difficult than the Human Genome Project."
"Although these technologies use sensor chips to convert human body physiological information into identifiable program data sources through algorithms and equipment, these technologies are now very popular."
"For example, smart watches and smart phones can monitor step count, blood pressure calculation, and heart rate detection. These devices can monitor human body data."
"But the signal conversion of brain waves is really not of the same order of magnitude as the above."
"Although it is easy to obtain brain waves, it is too difficult to read and identify them with high precision."
"Unlike the obvious ups and downs of cardiac waves, the voltage changes caused by brain waves are on the order of microvolts. Not only are such small voltage changes difficult to detect, external signal noise (signal noise) can also easily interfere with the reading of brain waves."
"Not to mention head movement, facial muscle movement, and the interference caused by the stability of the contact patch are quite serious for the reading and resolution of brain waves."
"Even differences in air humidity can interfere with it..."
Listening to Xu Xiao's words, Xu Chuan couldn't help but smile and said, "If it were easy, these problems would have been solved long ago. Why wait until you come?"
"Besides, if there is no difficult question, why study it?"
"Just like mountain climbing, conquering an ordinary mountain and conquering Mount Everest are two completely different levels and feelings."
Xu Xiao glanced at him sideways, and just about to say something, he remembered his brother's brilliant achievements, and suddenly didn't want to talk anymore.
Invisible pretense is the most deadly.
Damn it, having such an old brother puts a lot of pressure on her.
