A shiny silver sphere with a parachute and red ribbons might seem mysterious, but one person’s discovery turned out to be radar calibration equipment, not something from outer space.
Radar calibration spheres are designed with precision—perfectly round and reflective—to provide a consistent radar target. This consistency is important for adjusting radar systems used in weather forecasting, air traffic control, and satellites.
They’re released at high altitudes and descend slowly thanks to parachutes. The ribbons attached help stabilize them and alert people when they’ve landed. Winds can carry them far, so they sometimes end up in unexpected places like private fields.
These devices are safe, containing no explosives or radioactivity, only solid metal or metal-coated material. It’s recommended to notify authorities if found, as the spheres might be reused.
They are an important but often overlooked part of modern technology helping maintain our safety and knowledge of the environment.
