Progress in space science |
一堂“太空课”的8年之变,背后是中国航天的发展故事 |
www.i21st.cn |
BY 花消英气 from 21st Century Published 2022-01-21 |
“Hello, everyone! Welcome to Tiangong Class.” With this greeting, a special lecture began on Tiangong space station about 400 kilometers above Earth on Dec 9. Lasting for about an hour, the space lecture was broadcast live to millions of students. Three astronauts from the Shenzhou XIII crew – Zhai Zhigang, Wang Yaping and Ye Guangfu – hosted the lecture, demonstrating how they live and work on the space station and conducting some interesting experiments that can only be done in space. This is the second live space lecture in China. In 2013, with the assistance of two other Shenzhou X crew members, Wang delivered the country’s first live space lecture to over 60 million schoolchildren across China. More space to teach Compared with the class eight years ago, this year’s space lecture is greatly different. According to Pang Zhihao, a Beijing-based space expert, the “classroom” is bigger. Instead of Tiangong I experimental module, this year Wang delivered the space lecture in the Tianhe space core module, which is the biggest spacecraft developed by China. According to Xinhua, the launch of Tianhe signifies that China’s space station construction has entered the full implementation stage. Technological development The quality of space to ground interaction and communication is also much improved. The space lecture eight years ago sometimes faced the challenges of the video freezing and an unclear picture, but this year’s lecture is different. With the help of China’s Tianlian relay satellites, the transmission speed has been highly increased and the whole live broadcast has run smoothly. According to Xinhua, these changes show that Chinese aerospace industry has made great strides in the past eight years. Bigger curriculum Along with the technological progress, this year’s space lecture discussed more disciplines of science. Eight years ago, Wang showed students the laws of physics and focused on the interesting phenomenon of weightlessness in space. But this year, biology was added. The astronauts compared the growth and shape of cells in artificial gravity and zero gravity, so as to study their changing rules and mechanisms. Though these space lectures showed various topics, the aim behind the lectures has never changed. According to China Daily, the space lectures aim to “spread knowledge about manned spaceflights and spark enthusiasm for science among young people”. “The spirit of science in the youth is an important driver of the progress of mankind,” Zhou Jianping, designer-in-chief of China’s manned space program, added. “Space activities can help them build the spirit of pursuing science and facing challenges.” (Translator & Editor: Li Xinzhu AND Luo Sitian)
https://www.i21st.cn/story/3754.html |
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