On July 23, 2020, the “Long March 5 yao4” carrier rocket put the “Tianwen 1” Mars probe into orbit, officially opening the first flight of China’s deep space journey.
Tianwen-1 is the first Mars probe in the Tianwen series of China’s planetary exploration mission. And the source of its name is also very meaningful. It comes from the long poem Tian Wen written by Qu Yuan, a great patriotic poet in China. In this poem, Qu Yuan launched a series of “soul torture” to heaven and earth, strongly expressing the tenacity and persistence of the Chinese nation in the pursuit of truth, reflecting the cultural heritage of the exploration of nature and space, implying that the journey of seeking scientific truth is long and the pursuit of scientific and technological innovation is endless.
“Tianwen-1” has taken the first step in China’s exploration of planets and the universe, and it will arrive on Mars after a seven month trek, start its exploration journey on Mars, orbit around Mars, land on Mars, and conduct inspection and Exploration on its surface.
According to reports, on August 2, tianwen-1 successfully implemented the first midway correction of the earth fire transfer orbit. At present, it is moving further away from the earth at the speed of 300000 kilometers per day to Mars. With the increase of distance, information transmission has also been affected, and the space environment is far more complex than we thought, so tianwen-1 has a long way to go.
Is there any difference between China’s “tianwen-1” and America’s “curiosity”?
Curiosity Mars rover
Curiosity Mars probe is a Mars exploration vehicle developed by NASA. It is 3 meters long, 110 watts in power and weighs 1025 kg. It is equipped with a lot of upgraded equipment, such as chemical analyzer of rock composition and panoramic camera system. In addition, “curiosity” is powered by nuclear power. Its nuclear battery is powerful, not affected by sunlight, and has been used for a long time, so this is one of its advantages.
Most importantly, it will focus on identifying and collecting rock samples. It is also equipped with a 2.1-meter-long mechanical arm and 43 test tubes, which can drill a small cylindrical sample on the rock, store it in a test tube, seal it, and then bring the rock sample back to the earth. If Mars samples are successfully brought back to earth, scientists are likely to be able to analyze whether there are signs of life on Mars.
So far, “curiosity” can be regarded as the star of Mars exploration, and the results are numerous. Including the discovery of organic matter on Mars, the discovery of traces of lakes on Mars, and the discovery of liquid water on Mars, all of which were completed by curiosity. Therefore, it has made outstanding contributions to all mankind.
China’s “tianwen-1” probe
Weighing 200 kg, tianwen-1 is equipped with remote sensing camera, multispectral camera, laser breakdown spectrometer and instruments for detecting climate and magnetic environment. These devices will enable scientists to explore remote Martian environments, such as collecting images of sand dunes and glaciers, studying the composition of rocks and soil, collecting Martian atmospheric data, and studying Martian magnetic and gravity fields.
In addition, the “tianwen-1” solar panel is powered, so the rover can only work when there is sunlight. If its back is facing the sun, it can only rest and stand by.
Xiao Bian believes that China’s space science and technology are constantly improving, whether it’s a manned landing on the moon or the Mars rover launched this year, which is our pride.
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