After watching "Tiangong Classroom Lesson 2" 800 words

The second lesson of "Tiangong Classroom" is scheduled to start on the afternoon of March 23, 2022 at the China Space Station. The Shenzhou 13 crew astronauts Zhai Zhigang, Wang Yaping, and Ye Guangfu will cooperate with the lecture. China Central Radio and Television It will be broadcast live around the world. Below is an 800-word sample essay on "Tiangong Classroom Lesson 2" that I compiled for your reference. I hope it can help friends in need. "Tiangong Classroom Lesson 2" Reflection 800 words Chapter 1

"Tiangong" is a space station independently developed by our country. Don't mention it, the name "Tiangong" was not chosen casually. It is like a palace with everything in it.

The space station is a "space hotel-style laboratory" where astronauts can stay for short periods of time and conduct various space research and experiments. So why build a space station? The space station can test various technical equipment that may be used in future space flights. You can also get a "weightless" environment - a special environment that is difficult to obtain on the ground for a long time. However, the cost of a round trip to space is quite high. Being able to stay in space for more time at a time can reduce costs and improve work efficiency at the same time. Therefore, a place with comprehensive functions that can allow astronauts to live longer was born.

First of all, let’s introduce the plan of our “palace”.

The Tianhe core module is the bedroom of the palace, mainly for astronauts to live in. Cargo and manned spacecraft are used to transport goods and people just like vehicles on the ground. The Wentian Experimental Module and the Mengtian Experimental Module are not yet completed. They are the R&D laboratories in the "palace" and are used for various space experiments and scientific research.

Space will face all kinds of imaginable dangers, among which the threat comes from the sun as we know it. As we all know, the sun is the basis for the survival of all living things on earth. It provides an endless supply of various energy and nourishes the growth of all things. But the alpha rays and gamma rays it releases are very deadly. These two rays can easily penetrate your skin and destroy all cells in the body. So why can we bask in the sun every day on earth? That's because the Earth's magnetic field and atmosphere reflect or absorb them. The location of the space station must take this safety factor into consideration. The international community generally chooses a location 1,000 kilometers above the ground. Our "Tiangong", for the sake of maximum safety, is erected 400 kilometers above the ground. In this way, you can not only obtain protection from the earth's magnetic field, but also obtain protection from the atmosphere, killing two birds with one stone.

In ancient times, the Heavenly Palace was said to be in the clouds, where all kinds of gods lived. It was ethereal, invisible and intangible. Today's "Tiangong" is home to many astronauts and scientists. They are constantly working hard for the advancement of China's space science and technology high in the sky, so that we no longer rely on foreign technology and can truly look at the entire universe while overlooking the earth. The understanding of space continues to deepen.

So, our "Heavenly Palace" is truly a palace in the sky! Perhaps this is the origin and beautiful meaning of the name "Tiangong".

The door to the "Heavenly Palace" has been opened, soaring in the clouds and mists, traveling in space, the future is promising! "Tiangong Classroom Lesson 2" 800-word review 2

"The dream of flying will never be weightless, and the dream of science is infinite." Many years ago, "space teacher" Wang Yaping provided space training for more than 60 million students across the country. The message during the lecture still lingers in her ears. Now she has once again embarked on a space journey. She will become China's first female astronaut to station on the space station and China's first female astronaut to leave the spacecraft. Looking for the sound and staring, the originally mysterious and distant deep space is getting closer and closer to me, and each beautiful "flying dream" is becoming a reality.

In the early morning of the 16th, Shenzhou 13 was successfully launched, less than a month after the successful return of the Shenzhou 12 manned spacecraft. The new "space business trip trio" composed of Zhai Zhigang, Wang Yaping, and Ye Guangfu took a manned spacecraft to the Chinese Space Station. This mission will achieve many "firsts" such as radial rendezvous and docking with the core module, and the transition from a rescue ship to a formal mission ship. It will also carry out more space science experiments and technology tests based on the Shenzhou 12 mission.

“Sit on the ground and travel 80,000 miles in a day, survey the sky and see a thousand rivers in the distance.” In 2003, the Shenzhou 5 spacecraft carried Yang Liwei and was launched from the Jiuquan Satellite Launch Center. It took 21 hours and 23 minutes to successfully return to the ground, which was the first time that The Chinese nation’s dream of flying into the sky.

In the past 18 years, there have been 7 manned flights, with intervals ranging from years to months. The frequency of "business trips" is faster, the connection is smoother, and the preparations are more leisurely, demonstrating our country's ability to be self-reliant in science and technology; space travel has been from " From "one-day tour" to "quarterly tour", and then to this half-year "in-depth tour", the "space business trip" lasts longer, and the pace is bigger, farther and more determined, demonstrating the confidence of a great power.

From "two bombs and one satellite" and "Chang'e" to ask about the moon, to "Beidou" to guide the way, "Tiangong" to rover, "Tianwen" to detect fire, and then to the "Shenzhou" series to fly in the sky, " Xihe "chases the sun..." Breakthroughs are made and progress is made step by step. The Chinese nation's exploration of space has extended from the moon and Mars to the sun; as far as the Chinese people can see, they are looking up at the bright starry sky to searching for dark matter and gravitational waves, and even looking at it. to explore deeper and unknown areas in space.

"The romance of Chinese astronauts is to turn myths all over the sky into reality." Indeed, more and more Chinese aerospace figures in the vast space are turning the Chinese nation's romantic feelings for the vast stars into a realistic poem of space exploration. According to arrangements, the astronauts of Shenzhou 13 will stay in orbit for six months, and the Chinese will spend the Spring Festival in space for the first time. We look forward to keeping watch on New Year’s Eve so that we can hear the blessings from our compatriots from space for the first time. "Tiangong Classroom Lesson 2" Reflection 800 words Part 3

This time, the "Tiangong Classroom" teaching targets mainly young people. It adopts an interactive method of cooperation between heaven and earth. It is led by Wang Yaping, astronaut of Shenzhou 13 As the main teacher, Ye Guangfu and Zhai Zhigang served as assistants, giving live lectures to everyone.

Three "space teachers" demonstrated three interesting science experiments for teenagers: table tennis experiment, water film experiment and effervescent tablet experiment. The students also conducted the above experiments on the ground. Since the weightless environment of space is completely different from the gravity environment of the earth, completely different experimental phenomena were presented, which aroused people's deep thoughts.

For example, if students immerse a table tennis ball in water, the ball will float on the water due to the influence of buoyancy. But in space, after immersing a table tennis ball in water, the ball hangs in the water and will not fall even if it spins back and forth in the air. According to Wang Yaping's explanation, this is because the buoyancy force will disappear inside the space station, so the ball will not be affected by the buoyancy force to float up.

Let’s talk about the experiment that impressed me the most - the interesting water film experiment. Wang Yaping poured water into the metal ring to form a large water ball that resembled a convex lens, and then added origami flowers. The flowers bloomed in the water ball, which was breathtaking. This is because the surface tension of water shows its power in a weightless environment, so the water will not flow downward, thus forming a water ball. Then inject bubbles into the water polo, and the bubbles will divide the water polo into two parts, forming two images, one positive and one negative. However, Wang Yaping did not tell us directly, but caused us to think and let us actively explore and discover scientific facts. Mystery.

I was greatly shocked by the lecture on the space station. It also greatly increased my interest in science and planted the seeds of exploring the universe in my heart.

The blooming flowers in the water are like the prosperity of the motherland, blooming with their own brilliance, warm and beautiful. During the live broadcast, we not only learned a lot of knowledge, but also saw the beautiful scenes of the earth's surface and space. Every star flying in space and every drop of seawater in the ocean carry the dreams of countless Chinese teenagers.

This is the second time that "Sky Classroom" has been held on the Chinese Space Station. We firmly believe that in the future, the Chinese Space Station will continue to use the unique and rich resources in space to guide and encourage young people to actively explore and carry forward greatness. The scientific spirit, let us continue to look forward to the next course with a heart that loves science and explores the future! "Tiangong Classroom Lesson 2" 800-word review 4

March 23 , my classmates and I watched the second lesson of China Aerospace's "Tiangong Classroom". The astronauts Zhai Zhigang, Wang Yaping, and Ye Guangfu of Shenzhou 13 once again transformed into "space teachers" and gave us a very lively and interesting lesson.

On December 9, 2021, the first lesson of "Tiangong Classroom" officially started. The Shenzhou 13 crew astronauts Zhai Zhigang, Wang Yaping, and Ye Guangfu cooperated with each other to give lectures, and gave wonderful lectures at the China Space Station, which were broadcast live to the world. This is the first time that Chinese astronauts have given lectures in space after a lapse of eight years. It is also the first space lecture event on the Chinese Space Station. Their lectures were wonderful and successful, and they were very popular.

After the first class, the second class of "Tiangong Classroom" is even more exciting.

This space teaching activity will continue to be conducted in the form of a dialogue between heaven and earth. The astronauts will demonstrate space "ice and snow" experiments, liquid bridge demonstration experiments, water and oil separation experiments, and space paraboloid experiments in orbit to introduce and demonstrate space science. facility. For example, the space "ice and snow" experiment demonstrates the crystallization phenomenon of saturated liquid under weightlessness. The second lesson of "Tiangong Classroom" aims to disseminate and popularize space science knowledge and inspire the enthusiasm of young people to continuously pursue their "scientific dream" and realize their "aerospace dream".

I still vividly remember the space experiments in the first lesson of "Tiangong Classroom": "Space Fitness", "Cell Culture", "Disappearance of Buoyancy"... Among them, what impressed me deeply was what astronaut Wang Yaping did A series of experiments on water. Due to the weightlessness of water in space, it shows wonderful phenomena that are completely different from those on the ground. In the second lesson of "Tiangong Classroom", what impressed me most was the water-oil separation experiment. We all know that under normal circumstances, water and oil are separated; but in a weightless environment, the water-oil stratification phenomenon disappears, and the experiment is still Demonstrated the phenomenon of delamination through centrifugal force generated by rotation. It's incredible!

Through Tiangong Classroom, I not only learned wonderful scientific knowledge, but also felt the power of science and technology. The rapid development of our country's aerospace industry, the establishment of the space station, and the realization of the dream of flying depend on advanced aerospace technology. Looking up at the stars, I will work harder to learn scientific knowledge and contribute to the future development of science and technology in China. "Tiangong Classroom Lesson 2" Reflection 800 words Part 5

The "topic selection" conditions for space teaching are that the materials and equipment required for the experiment must be safe and reliable, have small mass, small size, and low power consumption , has no impact on the health of astronauts, will not pollute the cockpit environment, etc.; of course, factors such as being creative, simple and feasible, and not requiring a lot of astronaut time must also be considered.

“A magnet experiment was also designed at that time, but considering that the magnets may have an impact on the internal instruments and equipment of the spacecraft, the experiment was abandoned.” Pang Zhihao added, in addition, the chemical experiment has certain Danger: For safety reasons, chemical experiments in space are usually conducted in experimental cabinets or glove cabinets, which are difficult to present to students on the ground. Therefore, it is safer and more visual to choose physics experiments as the content of space teaching.

In order to carry out China’s first space science popularization education activity, the China Manned Space Engineering Office worked with the Ministry of Education, the China Association for Science and Technology and other departments to systematically and carefully plan the event and completed courseware and teaching aids In preparation for the production and ground classes, the astronauts also made special preparations for this purpose.

Since Tiangong-1 is a precision aircraft, the astronauts must be careful in their teaching activities. They must not move too much and interfere with normal flight. They must also be careful of floating experimental equipment and droplets affecting the spacecraft. Safety.

As the keynote speaker, astronaut Wang Yaping put a lot of effort into preparing lessons. She carefully prepared the teaching content and humbly asked professional teachers for teaching skills. Commander Nie Haisheng serves as a teaching assistant in the space classroom, responsible for cooperating with Wang Yaping in managing teaching aids and maintaining classroom order. Astronaut Zhang Xiaoguang was almost "tied" to the bulkhead to listen to this lesson, because as a cameraman, if he wanted to maintain balance in a weightless environment, he had to use restraints to fix himself to the bulkhead. When using a handheld camera, maintain stable shooting for a long time and send wonderful images of space lectures back to ground classes.

"Future space teaching will have more and more novel experimental contents and forms. For example, the comparison experiment between heaven and earth, comparing the difference between silkworms or spiders spinning silk in space and on the ground, and observing how butterflies spin in space. Flying, etc." Pang Zhihao said that relevant departments in my country have also begun to organize young people to design space experiments and regularly invite experts to review them. Excellent experimental plans are expected to be implemented on the Chinese space station in the future.