After the targeted completion of the calculation of this new carbon composite material, there are less than two days left before the 21st New Year.

Returning to the place where he lived with some data, Xu Chuan was also ready to start the New Year.

Limited by the ban on fireworks and firecrackers in Jinling, the smell of the New Year in the city is far less strong than in the countryside.

But for him, it's already very satisfying.

The family was eating a reunion dinner together, watching the Spring Festival Gala, and the days were plain and warm.

"Brother, do you think there will be life on Mars?"

After dinner, when the family was resting watching TV in the living room, Xu Xiao suddenly poked out a small head from the other end of the sofa and asked curiously.

"Why do you suddenly ask this?" Xu Chuan asked casually without replying, and his eyes fell on the Spring Festival Gala sketches, with the withdrawal of those teachers in the past, the sketches of the Spring Festival Gala are now becoming more and more boring.

"Now, the United States has landed on Mars." Xu Xiao handed over the tablet in his hand and said.

Xu Chuan turned his head curiously, took the tablet with his hand, and a piece of news came into his eyes.

[NASA's "Perseverance" rover successfully landed on Mars and sent back the first photo]

Seeing this news, Xu Chuan swiped his fingers with interest and learned about the information in detail.

According to foreign media reports, NASA's "Perseverance" Mars rover arrived on the Red Planet after a seven-month journey. At present, it has successfully landed on the surface of Mars and taken the first images of Mars, becoming the fifth NASA rover to successfully land. ”

It is worth mentioning that due to the thin atmosphere of Mars and the long distance between Earth and Fire, it is extremely difficult for the probe to complete the deceleration and landing autonomously, and NASA previously predicted that the probability of a safe landing of Perseverance was only 40%. ”

"In addition to collecting the geological and climatic characteristics of Mars to pave the way for human exploration, the Mars rover will also focus on astrobiology, that is, the study of life in the universe as a whole."

At present, Perseverance has successfully landed in the Jezero Crater, about 45 kilometers wide in the northern hemisphere of Mars. NASA believes that the site was once rich in water and hopes to use the instruments carried by Perseverance to detect signs of possible organic molecules and other potential microbial life. ”

“.”

"Brother, do you think there were Martians on Mars before? Is there any life on it now? ”

I don't know when, Xu Xiao touched the other end of the sofa, nestled beside Xu Chuan, looked at the tablet and asked with interest.

Hearing this question, Xu Chuan shrugged his shoulders and said, "I'm afraid this question needs you to go to Mars to investigate it in person to know." ”

"However, judging from the geological structure of Mars and past data, I think the probability of life on Mars is still quite high."

"If its core is not cooled, the magnetic field can protect the surface ecology, and there may be a chance to derive advanced life."

Xu Chuan has some understanding of the situation on Mars, but not much.

This is indeed a planet very similar to Earth, except that the metal core of Mars has cooled, there is no flow of liquid iron, and the magnetic field has disappeared, resulting in a barren surface under the long stellar wind.

I don't know if there is any life, but it should be gone now.

Even if there were, it is estimated that at most they are microorganisms, living in abyssal areas such as canyons and craters that can be avoided by stellar winds.

Hearing this, Xu Xiao suddenly looked forward to it: "It would be nice if I could catch a Martian and dissect it." ”

Xu Chuan: "."

He just said that the probability of microbial life on Mars is quite high, but he didn't say that there are Martians.

And if there are really Martians on Mars, who will dissect and who will not know.

After all, being able to hide from being discovered by human civilization on the earth shows that the other party's technology has reached a very high level.

But he didn't care, he just thought that this girl was fantasizing, and asked with a smile: "Anyway, how is your study?" ”

Like him, this girl is also a talented player, probably influenced by him, she 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 done a 'brainwave data analysis project', and I have already applied to participate in the study, but I don't know if I can be selected." ”

"Brainwave 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, and then analyze these brain waves, and do human-computer interaction through brain waves." ”

Hearing this, Xu Chuan touched his chin and asked with interest, "Are there just two schools in Mizuki and Massachusetts?" If I'm not mistaken, brainwave analysis must be quite a lot of work, right? ”

Xu Xiao: "At present, it seems that our school and Massachusetts are just there, but I heard that Peking University also wants to join, so I don't know the specifics." ”

After a pause, she remembered something, then puffed out her cheeks to look at Xu Chuan, and complained: "Brother, when I really entered this industry, I found out that the last time you fooled me, I really made me miserable, and now I fell into the pit, no, I can't climb up if I fall into the bottomless abyss." ”

Xu Chuan smiled and said, "How come?" I'm not you, and I've never cheated people. ”

Xu Xiao ignored him, sighed and continued: "It's too difficult to do human-computer interaction through brain waves. ”

"There are also many kinds of brain waves, such as 'human autonomic neural information database', 'brainwave information molecular imaging database', 'EEG, ERP, fNIRS, Ecog neural information database' and so on."

"To do a perfect analysis of these things, it is no less difficult than the Human Genome Project."

"Although through the sensor chip, the human physiological information, through algorithms and equipment, into a recognizable program data source, these technologies have been very popular."

"For example, smart watches, step count calculation, blood pressure calculation, and heart rate detection in smartphones can all monitor the data of the human body."

"But the signal conversion of brain waves is really not an order of magnitude like the above."

"It's easy to get brain waves, but it's too difficult to read and identify them with high accuracy."

"Unlike the fluctuating fluctuations of the heart waves, the voltage changes caused by the brain waves are of the order of magnitude microvolts. Not to mention that such a small voltage change is difficult to detect, external signal noise (signal noise) can easily interfere with the reading of brain waves. ”

"Not to mention the interference caused by head movements, facial muscle movements, and the stability of contact films, the reading and resolution of brain waves are quite serious."

"Even the difference in air humidity can interfere with it"

Listening to Xu Xiaotu, Xu Chuan couldn't help but smile and said, "If it was easy, these problems would have been solved a long time ago, so why wait until you come?" ”

"And, there are no difficult questions, what are you doing studying it?"

"Just like climbing a mountain, conquering an ordinary mountain and conquering Mount Everest are completely different grades and feelings."

Xu Xiao glanced at him, and just wanted to complain, but then remembered his brother's brilliant achievements, and suddenly didn't want to speak.

Invisible pretending is the most deadly.

Ma Dan, with such an old brother, her pressure is really big.

(End of chapter)