长期以来,UFO一直受到科学工作者及科学爱好者的关注,许多人曾亲眼目睹。据美国五角大楼证实,确有许多人曾看到一个低空飞行,其形状像倒过来的茶杯盖似的飞行物,人们一直对它发生怀疑。五角大楼的官员说,他们所看到的这个UFO实际上是美国的一项军事机密工程。在一次新闻发布会上,美国空军透露了专门用来研 For a long time, UFO has received attention from scientists and science enthusiasts, and many people have witnessed it. According to the U.S. Pentagon, many people have seen a low-flying flight. It is shaped like an inverted teacup-like flying object and people have been suspicious of it. Pentagon officials said the UFO they saw was actually a U.S. military secret project. At a press conference, the U.S. Air Force disclosed specifically for research