我们不时可以看到有关飞碟(不明飞行物)的报道,听到外星人光临地球的消息。这些来自遥远的星际、发生在茫茫的苍穹中的充满科学挑战与幻想的宇宙之谜对于人们、特别是广大青少年具有很大的吸引力。《飞碟、地外生命和外星人》的作者高衡是一位天文工作者。和许多天文爱好者一样 From time to time we can see reports of UFOs (UFOs) and hear alien visit to Earth. These cosmic mysteries full of scientific challenges and fantasies from distant interstellar stars and in the boundless sky are of great attraction to people, especially the vast majority of young people. Gao Hong, author of “UFO, extraterrestrial life and alien”, is an astronomer. Like many astronomers