Researchers at Northwestern University say they have developed a drone that spins so rapidly it becomes difficult to see, potentially making it harder for observers to track. According to reports, the drone’s appearance changes as its rotation speed increases, with the vehicle effectively “disappearing” from sight due to the speed of its motion. The coverage also frames the concept as a potential tool for military or security applications, suggesting such a drone could be used to approach targets with reduced visibility. The accounts describe the project as research into how fast-moving platforms can alter visual detectability, rather than a deployed system. Both outlets attribute the work to Northwestern University and emphasize the same core features: a spinning drone, extremely high rotation speed, and the resulting visual effect. The reporting does not provide additional technical specifications, testing results, or confirmed operational capabilities beyond the described visual disappearance concept.