In 1783, hot air balloons became the first viable option for people to explore the world from the sky. In the years since then, balloon flight technology has evolved from cloth balloons and open ...

This involves metamaterial plates or 3D hollow geometries (e.g., cones, spheres, or rocket shapes) with porous sidewalls that act as Knudsen pumps: light (typically sunlight) is absorbed on one side, ...

Forbes contributors publish independent expert analyses and insights. Peter Suciu covers trends in the world of aerospace and defense. There has been a fresh wave of balloon sightings across several ...

James Farrell is a breaking news reporter on the Forbes news team. A mysterious high-altitude balloon that U.S. officials were tracking over the Rocky Mountains on Friday was a “likely hobby balloon” ...

Defense Minister Sébastien Lecornu said on X that the “test launches pushed the technological constraints imposed on the aircraft, its pilot, and its weaponry beyond 20 kilometers of altitude.” ...

Early spring snow clung to the tree branches surrounding the Howe Hall parking lot as a dozen Iowa State University students began filling a high-altitude balloon with hydrogen just after dawn on ...

SOLDIERS ON MANOEUVRES do relish a “sinking exercise”: the blowing up of a clapped-out warship as target practice. And during Valiant Shield 2024, a wargame in the Pacific, many witnessed a ...

AMES, Iowa – Early spring snow clung to the tree branches surrounding the Howe Hall parking lot as a dozen Iowa State University students began filling a high-altitude balloon with hydrogen just after ...