Browse a gallery of the U.S. Air Force's high-altitude balloon experiments and the researchers, scientists, and test pilots who made them possible.

But before you consider sneaking off with your partner for a rendezvous among the clouds, let's dive into the legality of this high-altitude romance. TL;DR: Quick Takeaways on the Mile High ...

As you can see in the accompanying video, the Kittinger jumps were part of an Air Force project to test multi-stage parachutes made for high-altitude ejections. This was dangerous testing.

The Army Black Hawk helicopter that collided with an American Airlines passenger plane was flying too high, according to the ...

The test was intended to build on a successful 12-kilometer-altitude vertical takeoff, vertical landing (VTVL) test performed in June 2024. SAST published results and footage from the June test ...