Fei's "flying" gives people an elegant and elegant feeling as a whole, and his pen is also very accurate. The arrangement of stippling is reasonable and compact, and the flying white produced by dry pen is in contrast with thick ink and rising ink, which strengthens the sense of rhythm and rhythm of the work.
As a commander, Fei liked calligraphy as early as when he was a student. After becoming an astronaut. No matter how busy the training is, you should write a word every day, even if you want to practice a word. Calligraphy adjusted Fei's training life, and also made him feel comfortable and exercised his willpower.
1. Popularization of space science:
Space flight, also known as space flight, space flight, space flight or space flight, refers to various activities of entering, exploring, developing and utilizing space (that is, space outside the earth's atmosphere, also known as outer space) and celestial bodies outside the earth.
Space activities include space technology (also called space technology), space application and space science. Space technology refers to a comprehensive engineering technology that provides technical means and guarantee conditions for space activities. Space application refers to the use of space technology and its developed space resources in scientific research, national economy, national defense construction, culture and education.
Space resources refer to all kinds of environment, energy and material resources that can be developed and utilized by human beings outside the earth's atmosphere, such as high and remote positions in space, high vacuum, ultra-low temperature, strong radiation, microgravity environment, solar energy and material resources of celestial bodies outside the earth.
2. Space history:
1957 10, the world's first artificial earth satellite Sputnik 1 was successfully launched in the former Soviet Union, which opened a new era of human space flight, and space began to become a new frontier of human activities, and this year was designated as the first international space year.
In the past half century, space technology has made great progress in the world. Space technology has been widely used in many sectors of scientific activities, military activities, national economy and social life, and has produced extremely significant and far-reaching effects.
1970 On April 24th, China's first artificial earth satellite "Dongfanghong-1" was successfully launched, which opened the curtain for China people to explore the mysteries of the universe, use space peacefully and benefit mankind.
3. Why is there weightlessness in space?
First of all, "weightlessness" in space is not weightlessness in the real sense. But a special state similar to weightlessness.
The definition of weightlessness is the phenomenon that the pressure of an object on a support is less than the gravity of an object. If you think about it carefully, you will find that this definition sets a premise for weightlessness, that is, the existence of gravity field. Without gravity field, there would be no gravity, and there would be no weightlessness.
In other words, according to this definition, weightlessness will only appear in the gravitational range of celestial bodies. For the space without gravitational field (either ignored or balanced by centrifugal acceleration, all within the range without gravitational field), there is no weightlessness according to the above definition because there is no gravity. The state without gravity in space is also called weightlessness, because it feels like weightlessness.
The "weightlessness" state in space is a state of being out of the force field, or a state of no gravity at all. This can be known from the situation that astronauts are suspended on the spacecraft.