The jet stream is like a river of west-to-east winds in the upper atmosphere. Airplanes use it like a highway.

the world’s fastest jet remains unbeaten. The X-43 still tops the ranking of the fastest planes of all time - which includes military aircrafts and both active and inactive experimental projects.

The F-22 Raptor was the world's first operational fifth-generation fighter jet, and remains one of the most advanced planes in the air ... It's not the fastest fighter jet in the Air Force's ...