Six articles with 500 words about the second classroom in Tiangong.

I believe that after watching the space lecture in the second classroom of Tiangong, the students are full of yearning for space, and at the same time they have planted the seeds of space dreams in their hearts. The following is my 500-word review of the second classroom in Tiangong. Welcome to learn from them!

Comments on the 500-word second classroom in Tiangong 1

From Shenzhou 5 to Shenzhou XIII, from one person a day to three people in half a year, China people have never stopped walking towards the sea of stars.

More than half a century ago, a song "Dongfanghong" resounded around the world. Today, bright China red shines in space. From "two bombs and one satellite" to "manned space flight", "space dream" has long been integrated into the great "Chinese dream" and has become a brilliant stroke in the development of human civilization.

The missions such as "Chang 'e" going to the moon, "Beidou" guiding the way, "Tian Wen" asking the sky, "Tiangong" visiting the victory, "Jade Rabbit" exploring the moon, "Zhu Rong" exploring the fire and "xi" exploring the sun are full of the profound cultural heritage of the Chinese nation, showing the exploration achievements of China's space flight to climb scientific and technological peaks again and again, and showing the great China Road and China spirit.

Dreaming for nine days and then asking for heaven, striding for a new journey of strengthening the country. The Chinese nation's exploration of the infinite universe is endless. You can spend nine days on the moon, catch turtles in five oceans, and laugh and laugh. Behind every step of innovation and breakthrough in space travel, it is inseparable from the hard work, unremitting struggle and independent innovation of generations of astronauts. They have become the common memory of a country and a nation.

It is another golden autumn in October, which was once a dream of home and country. This space trip will not only set a new record for China people's stay in space, but also carry out more space science experiments and technical experiments to produce high-level scientific achievements. We can also spend the Spring Festival in space with them ... Scientific exploration will once again play a concerto with the space dream.

"Flying dreams never lose weight, and scientific dreams have unlimited tension." Just as Wang Yaping, a female astronaut, said before going out to war, as long as you dare to dream, dare to pursue dreams and build your own dream spaceship with wisdom and sweat, you will be able to meet the launch moment of your dreams and fly to the vast starry sky that belongs to you!

Comments on the Second Classroom of 500 Words in Tiangong 2

The "topic selection" condition of space teaching is that the materials and equipment needed for the experiment must be safe and reliable, light in weight, small in size and low in power consumption, which will not affect the health of astronauts and will not pollute the cockpit environment. Of course, originality, simplicity, feasibility and other factors should also be considered, and astronauts should not spend a lot of time.

"At that time, a magnet experiment was also designed, but considering that magnets may have an impact on the internal instruments and equipment of the spacecraft, this experiment was abandoned." Pang Zhihao added that in addition, chemical experiments are dangerous. For safety reasons, chemical experiments in space are usually carried out in experimental cabinets or glove boxes, which are difficult to present to students on the ground. Therefore, it is safer and more intuitive to choose physics experiment as the content of space teaching.

In order to do a good job in China's first space science education activity, China Manned Space Engineering Office, together with the Ministry of Education and China Association for Science and Technology, made a systematic and careful plan for the activity, and completed the preparation of courseware, teaching AIDS and ground lessons, and astronauts also made special preparations for it.

As Tiangong-1 is a precision aircraft, astronauts must be careful not to move too much and interfere with normal flight, and also be careful that floating experimental equipment and droplets affect the safety of the spacecraft.

As the keynote speaker, astronaut Wang Yaping made great efforts in preparing lessons. She carefully prepared the lecture content and humbly asked the professional teacher for lecture skills. Nie Haisheng, the commander, works as a teaching assistant in the space class, and is responsible for coordinating with Wang Yaping to manage teaching AIDS and maintain class order. Astronaut Zhang is almost tied to the bulkhead to finish the lecture, because as a cameraman, if he wants to keep his balance in weightlessness, he must fix himself on the bulkhead with a strap, so that he can keep stable shooting with a hand-held camera for a long time and send the wonderful pictures of space teaching back to the ground classroom.

"In the future, the experimental content and form of space teaching will become more and more novel. For example, the comparison experiment between heaven and earth compares the difference between silkworms or spiders spinning in space and on the ground, and observes how butterflies fly in space. " Pang Zhihao introduced that relevant domestic departments have also begun to organize young people to design space experiments and regularly invite experts to review them. It is expected that an excellent experimental scheme will be implemented in China Space Station in the future.

500 words about the second classroom of Tiangong No.3

China's first space teaching activity lasted about 40 minutes. The interaction between heaven and earth is realized with the support of China's relay satellite, and its appearance also marks the basic completion of the TT&C network of China's new generation manned space flight.

"The most difficult thing about online classes on the ground is the smooth network, which is even more difficult to guarantee in the sky." Yang Yuguang said that how to ensure the smooth communication link of high bit rate and high fidelity video stream is the most challenging, difficult and uncertain link in the process of space teaching.

Yang Yuguang further explained that the transmission of high-definition video in China's space teaching mainly relies on the commanding Skylink relay satellite, the ground monitoring station and the Roy survey ship as backup, but the proportion of ground monitoring and control support is not high, because Tiangong-1 and the space station are not over China most of the time.

A basic principle of wireless communication is that the higher the data bit rate, the higher the energy consumption and the higher the sensitivity requirements for transmission equipment.

"Space teaching needs higher audio and video bit rates." Yang Yuguang explained that this antenna link relay satellite uses a high-gain antenna, which makes the beam very narrow to ensure energy concentration and smooth transmission of high-bit-rate video data. At the other end is the butterfly antenna on the China Space Station, pointing to the relay satellite for cooperation. In this way, theoretically, a relay satellite can "see" the space station in China at any time, so as to ensure the smooth communication in the teaching process. "The delay in teaching in space is only about 0.3 seconds." He said.

Not only that, space teaching and all-factor drills before teaching involve extensive cooperation between heaven and earth.

"On 20__, when Wang Yaping gave his first lecture in space, the Ministry of Education was responsible for organizing students, the China Association for Science and Technology was responsible for designing preparatory courses, and the China Manned Space Engineering Office was responsible for astronauts and communication systems." Pang Zhihao said.

"Switching relay stars in TT&C communication system is also an important cooperation between heaven and earth. In addition, the physics experiment demonstrated by Wang Yaping in the sky, the ground teacher is also doing the same experiment, and the comparison experiment between heaven and earth is presented on the video screen almost at the same time. " Yang Yuguang said.

500 words about the second classroom of Tiangong No.4

I like the beautiful Chinese knot hanging in the "Tiangong" space station, which is facing the bright five-star red flag. Such a space station is the most beautiful scenery in space, and it also makes us feel more cordial.

In space, you should control your body to adapt to weightlessness and swim around like a fish. Food was originally prepared in advance on earth. Cultivating space plants is an important task in this mission.

In space, although you can't take a hot bath like on earth, there is no problem in washing your face and hair. Researchers have specially developed a decomposition shampoo-it can not only wash your hair clean, but also save water. The water in the space station is very precious, so we should save water as much as possible.

Sleeping in the space station is more interesting. As long as you have a sleeping bag, it is generally required to be fixed on the bulkhead, but you can sleep anywhere, such as the ceiling, as long as you like.

There are also many leisure activities in the space station, such as video calling with family members, enjoying the beautiful earth at sunset from the porthole and doing morning exercises. Morning exercise is a traditional fitness program in China-Tai Ji Chuan.

The most important and exciting thing is extravehicular activity. Put on your "flight suit" and go outside the cabin through the airlock. Through the joint efforts of the ground dispatcher and the cabin companions, the related tasks were successfully completed outside the cabin.

There are also many happy events in space: the rice planted is heading, the space courier is ushered in, and new partners are ushered in for work handover. After staying in space for three months, I will bid farewell to the Tiangong space station and return to Earth soon. I am very excited to meet my relatives on earth soon.

Space itself is fascinating. In the vast universe, every time there is a five-star red flag, every Chinese son and daughter feels cordial and proud!

500 words about the second classroom of Tiangong No.5.

This time, Shenzhou XIII has many "bright spots": compared with Shenzhou XII staying in space for three months, this time it is half a year, three astronauts will spend the Spring Festival in space, and we will receive the New Year greetings from space for the first time on earth; This is the first time that a female astronaut from China has entered the China Space Station, and astronaut Wang Yaping will also become the first female astronaut in China to carry out extravehicular activities. This time, the space station will conduct radial docking by autonomous rapid rendezvous and docking for the first time; This manned mission will carry out 2 ~ 3 extravehicular activities and so on.

From Shenzhou-1 to Shenzhou-13, from 2003, when Yang Liwei was the first astronaut in China, he realized his Millennium dream of traveling in space. Up to now, there have been 12 people in China, and China's space industry is making great strides. The grand project of space station construction will be completed step by step in an orderly manner, and we firmly believe that it will go smoothly in the future; With the unremitting efforts of generations of China astronauts, the space dream related to human peace and progress will definitely come true, and we are full of confidence in it.

For China people, behind this excitement, there is more calmness. Behind decades of space career is the great road to national rejuvenation. We have experienced the struggle of the country and felt the rapid progress of this country in the changes of daily life.

In the future, we will also witness the launch of Shenzhou XIV and Shenzhou XV. Every witness has strengthened people's confidence in the country and the future. It is an indisputable fact that the strength of science and technology is getting stronger and stronger. It is a change that people can see and touch, not just an illusion. Therefore, this is not only a story of China astronauts passing on their dreams from generation to generation, but also a story of people becoming more confident, the country becoming stronger and the nation becoming more hopeful.

We can't help looking back on the past. The more we look back on history, the more we can understand the present. The more you look back, the more you cherish it. We will constantly review every important node of China's scientific and technological undertakings, and look for the motive force of national progress in these landmark events. Those moments, because memories become eternal.

Comment on the second class of "500 words in Heaven" 6

Tiangong is a space station independently developed by China. Needless to say, the name "Tiangong" was not casually named. It's like a palace with everything.

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

First of all, introduce the planning of our "palace".

Tianhe core cabin is the bedroom in the palace, mainly for astronauts to live in. Goods and manned spacecraft are used to transport goods and people, just like vehicles on the ground. The candlestick experimental module and the dream experimental module have not been completed yet. They are R&D laboratories in the "Palace" for various space experiments and scientific research.

There are all kinds of imaginable dangers in space, among which the threat comes from the sun as we know it. As we all know, the sun is the foundation of life on earth. It provides endless energy and nourishes the growth of all things. But the rays and gamma rays it releases are very deadly. These two rays can easily penetrate your skin and destroy all cells in your body. Then why can we bask in the sun every day on the earth? That's because the earth's magnetic field and atmosphere will reflect or absorb them. This safety factor must be considered in the site selection of the space station. Internationally, the distance from the ground 1000 km is generally chosen. Our "Tiangong" is set 400 kilometers above the ground for safety reasons. This can be protected by the earth's magnetic field and atmosphere, killing two birds with one stone.

In ancient times, it was said that the Temple of Heaven was in the clouds, and all kinds of immortals lived there. At present, many astronauts and scientists live in the "Tiangong". They are working hard for the progress of China's space science and technology in high altitude, so that we can no longer rely on foreign technology, and we can really look at the whole universe while overlooking the earth and have a deeper understanding of space.

So our "heavenly palace" is really a veritable heavenly palace! Perhaps this is the origin and beautiful meaning of the name "Tiangong".

The door of "Tiangong" has been opened, and the future can be expected!

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