As handy as multicopter drones are, the endlessly spinning blades are noisy, energy-intensive and potentially dangerous. Balloons could be a good alternative to do at least a few jobs other drones can ...

German engineering firm Festo has created this flying manta ray. Dubbed the Air_ray, it’s a balloon made of an aluminum-vaporised “PET foil”. Inflated with helium, the Air_ray’s propulsion system is a ...

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, ...

On Wednesday, the company's VISTA platform ascended nearly 25 km above Earth from Vijayawada as part of "Mission SANA", ...