A Reprogrammable Space Probe Design For Mission Multitasking in Orbit Right now, thousands of satellites are circling the Earth. They're a diverse bunch. Some relay telephone calls, some spy on North Korea, some monitor the weather. But they all have one thing in common: each can only do one thing. A spy satellite can't suddenly start forecasting storms, and a communications satellite can't study asteroids. Well, that's all about to change. Researchers at the Institute of Space Systems at the University of Stuttgart, Germany, have designed a variable-function satellite that can alter its mission on the fly.