使用一根绳子连接地球和航天器,人们乘坐太空电梯就可以上下穿梭。1895年,俄罗斯科学家首次提出太空梯概念,历经上百年研究,这个梦想仍未实现。最大的挑战在于,没有人能造出数万公里长的超强缆绳。然而,美国企业家迈克尔·莱恩表示,他准备另辟蹊径,在10年内建成从月球通向地球的“月球天梯”。 Use a rope to connect the Earth and spacecraft, people take the space elevator can shuttle up and down. In 1895, Russian scientists first proposed the concept of space flight, after hundreds of years of research, this dream has not yet been realized. The biggest challenge is that no one can make tens of thousands of kilometers of super-strong rope. However, U.S. entrepreneur Michael Ryan said he is ready to find another way to build the “Moon Ladder” that will lead from the Moon to Earth within 10 years.