目前,关于UFO的来源有一些不同的观点派,比较流行的是外界来源说,即UFO来自于外星。我们的宇宙理论上是无限大的,因此人类绝不是宇宙中唯一的智慧生物,一定存在外星人,那飞碟就可能是外星人的飞行器。那么,外星人是否有可能乘坐UFO来到地球呢?如果要从外星球来到地球,首要问题就是,是否可以解决超远距离问题?其实有两种理论途径可以解决这个问题。第一种,运用光速传输,即:包括 At present, there are different opinions about the sources of UFO. What is more popular is that the UFO comes from extraterrestrial sources. Our universe is theoretically infinite, so mankind is by no means the only intelligent creature in the universe. There must have been aliens. That flying saucer may be an alien aircraft. So, is it possible for the aliens to take the UFO to Earth? If the problem is to come to Earth from the outer planet, the most important question is: Can we solve the issue of ultra-long distance? There are actually two theoretical ways to solve this problem. The first one uses light speed transmission, ie: includes