Then, in 1989, an oil exploration engineer from the Royal Observer Corps named Chris Gibson claimed he spotted a triangle-shaped ... made big-budget hypersonic spy planes unnecessary in this ...

In 2013, Lockheed Martin announced development of the successor to the SR-71 Blackbird spy plane. The SR-71 was capable of reaching speeds over three times the speed of sound, and the SR-72 is ...

The U-2 spy plane is an engineering marvel, but it can't land on its own. This is the complicated process pilots have to go through to bring the plane down safely. Follow Tech Insider: On Facebook ...