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人类在地球上用双脚走路,看见天上鸟儿自由飞翔,于是模仿着去飞。聪明的中国人,在公元前1000年就发明了风筝,想飞上天的意念一直没有停,制作飞行器的尝试也在进步,到了公元1232年,宋理宗绍定五年时,已能用火箭来抵抗攻城的元军,后来成吉思汗把中国的火箭制作技术传到阿拉伯,又传到欧洲。公元1250年,英国传教士罗杰·培根曾著书记述以机器飞天的观念;1490年,达·芬奇也设计了飞天机器,甚至还附有降落伞
As humans walk on both sides of the earth, they see the birds flying freely in the sky, thus imitating the flight. Clever Chinese invented the kite in 1000 BC, the idea of flying to heaven has never stopped, and aircraft-making attempts are making progress. By the year 1232 AD, Song Li-tsung had been able to resist with a rocket for five years Yuan Yuan army siege, Genghis Khan later rocket production technology in China spread to Arabia, but also spread to Europe. In 1250 AD, Roger Bacon, a British missionary, wrote a book describing the idea of flying with a machine. In 1490, Da Vinci designed a flying machine and even attached a parachute