The Secret of the Distance

In order to bring China to the forefront of the world in space exploration, astronomers such as Nan Binghuai inherited the "two bombs and one satellite" spirit of the older generation of scientists. They were not afraid of challenges and overcame difficulties, and finally built the world's largest radio telescope, known as the "Eye in the Sky", which lit up the vast universe with the farthest observing "Chinese Eye". To this end, scientists such as Nan Binghuai and Cheng Xuedong have made huge sacrifices, but they have brought China to the forefront of the world in the field of astronomy. I would like to dedicate this book to those unknown scientific and technological workers who have made selfless contributions to the dream of a strong country. This book was selected as one of the top 100 masterpieces of 100 websites in the 100 years since the founding of the Party. This book is permanently collected by the National Library