Taikonauts teach from space

Historic lecture broadcast live to millions of students all over China.

 

Students gathered in a school in Beijing ask Chinese astronaut Wang Yaping questions as she delivers a lesson from the Tiangong-1 space station  

ABOUT 1,000 Form 4, 5 and 6 students from the Beijing No 2 Middle School were glued to the projection screen in their classrooms to watch the historic lecture broadcast live from space together with millions of pupils and students in China.

Many students from the school could not take their eyes off the 40-minute physics lesson in which three Chinese taikonauts on board the Tiangong-1 orbiter first showed how they meditated airborne and measured their weight using a special scale, designed based on the Newton’s second law of motion, in a gravity-free environment.

Wang Yaping, China’s second female taikonaut and the teacher in charge of the lecture, then demonstrated how a gyro in a high-speed rotation motion could actually maintain the position of its axis in space like that on Earth.

She pushed a static gyro in the air and then spanned another gyro. The static gyro rolled forward but the rotating gyro kept its axis intact.

She noted that the fixed axis concept of the high-speed rotating gyro has been widely used in the aerospace field, saying that a wide range of gyroscopes had been installed in the Tiangong-1 orbiter to measure its flight pattern accurately.

Fifth former Wu Tong said she was especially fascinated with the experiment conducted by Wang to examine the movement of a small ball tied with a string to a holder fixed on a metal plate.

“Previously, we have been taught on the theory and not the practical side of it. It is rather difficult to simulate a vacuum environment.

“In class, our teacher used to tell us that the ball would move in a circular motion (when one pushed it) and would not stop. Today, we finally saw it for ourselves,” she said.

To many students, another highlight of the lecture was the water ball experiment that explained how zero-gravity magnified the surface tension of water.

Wang made a water film on a metal ring by inserting the ring into a water bag. Then she added more water onto the ring to form a thicker water film and eventually a water ball.

The water ball miraculously did not break even when commander of the crew Nie Haisheng used an injection needle to extract the bubbles inside the water ball.

After that, Wang moved closer to the water ball and said: “Look at this water ball. Does it look like an inverted microscope? Through it, you can see my inverted image!” At this moment, the classrooms were filled with thunderous applause.

Wu described the experiment as “magical and ingenious”.

“The experiment was well designed. They also injected gas and coloured liquid into the water ball to show us the increasing surface tension of the water,” she said.

Another fifth former Gu Xu said: “We have just studied this topic on surface tension. It is quite amazing to see how the coloured liquid spread all over the water ball.”

Apart from a total of five experiments, the taikonauts also took questions from four students who were attending the lecture at the High School Affiliated to Renmin University in Beijing.

On the presence of space debris, Wang said they had not spotted any space debris since they entered the orbit but they do exist.

“The number is quite big but the possibility of the debris hitting the spacecraft is rather small. If they do collide with the spacecraft, the consequences could be disastrous.

“That’s why before embarking on our mission, we had conducted an analysis of space debris and taken preventive measures to protect the Tiangong-1 orbiter,” she said.

“Did you see any UFO?” asked a Standard Four pupil amid laughter from the rest of the students.

Wang said that through the spacecraft window they could see the beautiful colours of the Earth, the moon and stars, but no UFO.

Wu said the lecture was very meaningful for her to widen her knowledge of space science.

She said she was proud of the Chinese taikonauts for conducting the nation’s first lecture from space, after other such feats by space exploration powerhouses like the United States and Russia.

Gu said the gravity-free environment in space provided scientists with new ideas and it was important for China to take the lead in exploring space and acquiring its technology.

“The research and development in science has no limits. When we are in command of everything on the land and in the sky and sea, space will be our new frontier,” he said.

MADE IN CHINA BY CHOW HOW BAN

Related posts:

China's space dream comes true with humble 

hina's space dream crystallized with Shenzhou-10 launch 

China's space dream comes true humbly

Ten years after China sent its first man into low earth orbit, three astronauts operating the Shenzhou-10 spacecraft started a journey on a mission which seeks a permanent space station around 2020.



Chinese President Xi Jinping said at the launch site that the crew carry a "space dream" of the Chinese nation and represent the lofty aspirations of the Chinese people to explore space.

The dream, though also dreamt by the more frequent space travelers of Russia and American, includes a manned space station, moon exploration and even deep space odysseys.

The dream is a humble one. China was decades behind Russia and the United States in space technology.

But Chinese pursue it unswervingly in line with a carefully designed three-phase manned space program.

Two years after the space flight operated by China's first astronaut, Yang Liwei, two men, including Shenzhou-10 commander Nie Haisheng, orbited the earth in 2005. Then three more in 2008, two of whom finished China's first extra-vehicular activities (EVA).

After the unmanned Shenzhou-8 and Tiangong-1 space module docking in 2011 to test automated space docking, a key skill to assemble a space station, three Chinese astronauts succeeded in operating the docking manually in 2012.

The Shenzhou-10 mission, if successful, marks the end of the first half of the second phase, which means China has completely mastered EVA and space docking skills.

However, just as the female astronaut Wang Yaping said, "we are all students in facing the vast universe."
China's pursuit of its own space dream showcases a latecomer's unremitting interests and desire to learn about the universe.

During the 15-day Shenzhou-10 mission, Wang will hold a class in space educating a group of students from a high school in Beijing through satellite communication.

This in-orbit event, hopefully broadcast live, will inspire students and also spur citizen's space interests in a country with 1.3-billion people, making this an unparalleled popularization of science in human history.

Similar to other space giants, China's space program was carried out by astronauts selected from air force pilots and supported by military resources. But China has reaffirmed that it opposes militarization of the space and will utilize the space in a peaceful way.

After the year 2020, China's future space station will probably be the only one of any kind in service considering the ISS's retirement plan. By then, China's space dream will not only serve its own people but also contribute to space exploration for the human race.

By Xinhua writers Yan Hao, Meng Na and Li Huizi

Related post:
China's space dream crystallized with Shenzhou-10 ...

China's space dream crystallized with Shenzhou-10 launch

JIUQUAN, June 11 (Xinhua) -- China successfully launched its fifth manned spacecraft late Tuesday afternoon, sending three astronauts on the country's longest space trip.

With 10 astronauts and six spacecraft launched into space in a decade, China is speeding up on the path of exploration and building a home for Chinese in the galaxy.

At a see-off ceremony held hours before the launch, Chinese President Xi Jinping extended good wishes to the three astronauts.

"The mission's crew members carry a space dream of the Chinese nation, and represent the lofty aspirations of the Chinese people to explore space," said Xi.

The President later watched the launch at the Jiuquan Satellite Launch Center in northwest China, and shook hands with staff at the center after the successful launch.

Unlike the space trip of Yang Liwei, China's first astronaut who boarded the Shenzhou-5 spacecraft in 2003, of less than a day, the three astronauts will stay for half a month.

In its journey, Shenzhou-10 will dock with the orbiting space lab Tiangong-1 twice, once through automatic operation and the other manual, and a lecture will for the first time be given on board the assembled orbiter to a group of teenage students on the ground.

Compared with the previous nine Shenzhou spacecraft, the Shenzhou-10 is no longer experimental but considered an applicable shuttle system for transporting astronauts and supplies to orbiting modules.

"It is like developing a new type of car. You have to try it on roads of different conditions. Now trials are over and the car can be put into formal operation," said Zhou Jianping, chief engineer of China's manned space program.

On the other hand, the upgraded Long March-2F carrier rocket is technically the same as the one used with the Shenzhou-9 manned spacecraft.

"No alteration means that China's rocket technology is becoming mature," said Jing Muchun, chief designer of the carrier rocket.

This mission aims to further test technologies designed for docking and supporting astronauts' stay in space, as well as to use new technologies related to the construction of a space station, said Wu Ping, China's manned space program spokeswoman, at a press conference on Monday.

The Tiangong-1 space lab has been in orbit for about 620 days, and about three months are left before the designated end of its service.

The module is considered the first step toward China operating a permanent space station around 2020 and making it the world's third country to do so.

The nation is likely to launch a space station before 2016.

There are risks that the conditions of some components on Tiangong-1 might not be at their best since the module is near the end of its service and has gone through four docking tests, Wu said.

For Nie Haisheng, commander of the three-member crew and a second-time space traveler, this mission will be longer, with more experiments to be conducted, than his previous outing in 2006.

"It will be a new challenge with greater risks," Nie told the media on Monday.

However, he is looking forward to entering the space lab module. "My colleagues and I will work in a home for Chinese in space," he said.

For this mission, the manned space program also considered approaching the public.

In a lecture through a live video feed system, female astronaut Wang Yaping will introduce motion in a microgravity environment, surface tension of liquid, and help students understand weight, mass and Newton's Laws.

Wang will also interact with students and teachers on Earth and the lecture will be broadcast live.
Ordinary Chinese, especially science enthusiasts, are excited about the new mission.

"It is a festival for space fans," said Zhao Yang, a researcher with the China Science and Technology Museum, who just watched the Hollywood sci-fi blockbuster Star Trek Into Darkness on Monday.

He was very much interested in the lecture to be given in space, saying, "There might be an interesting introduction about the weightless condition."

For renowned science fiction novelist Liu Xinci, Tuesday's events reinforced his belief that he will live to see space travel become accessible for all common people.

He has a very vivid vision of future life.

"In the next century, human beings will set foot on all planets in the solar system. People will inhabit the moon and Mars. A lot of people will work in space as space journeys will be as easy as flights."

COMMUNISTS IN SPACE

The three-member crew were all veteran Air Force pilots before being selected as astronauts. Nie is the first general visiting space while his teammate Wang Yaping is China's first space traveler born in the 1980s, a generation growing up in era of reform and opening up.

All of them are members of the Communist Party of China.

Yang Liwei, the country's first astronaut, once told Xinhua that Chinese astronauts might not pray like their foreign counterparts do before they set off on a space mission; however, Communism, as their shared faith, supports them.

"If the country has its own space station, Chinese astronauts, who are Party members, might set up a Party branch up there," Yang said.

Of the crew, 48-year-old Nie is commander of this mission, and responsible for the manual docking operation with the Tiangong-1 target orbiter.

Zhang Xiaoguang, 47, will assist the commander to accomplish the spacecraft's manual docking with Tiangong-1. Another job that Zhang will be doing in space is to film Wang's lecture lecture, which will be broadcast to middle and elementary school students in China.

Wang, 33, is the second Chinese female astronaut after Liu Yang in the Shenzhou-9 mission, which blasted off in June last year. Wang will be responsible for monitoring the conditions of the spacecraft, space experiments, operation of equipment and taking care of fellow crew members.-  Xinhua