Tsiolkovsky, a Russian middle school teacher, first pointed out this road. He was deaf because of illness at the age of 9, so he hardly went to any school. He completed some math and science courses in middle schools and universities by his own efforts. Then, he worked as a math teacher in a remote rural middle school and began to study the principles of balloons and airplanes. At the age of 4 1, he wrote a long article to explain his proposition-relying on the power of rockets for space navigation. After five years of twists and turns, this famous paper (Research on Space with Jet Tools) was officially published in 1903 (the year when Wright flew into the sky). Later, he published many important papers in succession and continued to demonstrate its possibility. He designed many rockets under extremely difficult conditions, and deduced the famous "Zion Nencof Formula" in rocket theory. He wrote more than 730 books (departments) in his life. He once suggested building a space navigation station with rockets and establishing an observatory on it, making it a springboard to other planets. He also said: "In the initial stage, an artificial earth satellite should be built first." How correct these views are, and they have been confirmed by practice. He is worthy of being a pioneer theorist in conquering the universe. Russians proudly called him "the father of space navigation" and built a monument for him. After his death, he took this famous saying as his epitaph: "The earth is the cradle of mankind, but people can't live in the cradle forever. At first, he will carefully walk out of the atmosphere and then conquer the solar system. "