Applications of piezo electric actuators are not limited to the earth’s surface. Piezo actuators are used in many satellite missions and for experiments in the ISS. The well known comet lander Philae has two piezo based sensors on board. One sensor is used to analyze the structural and mechanical characteristics of the comets surface.  The other one is a sensor for the detection of dust particles in the comets coma. Other uses are telescopic adjustments or active vibration damping on satellites or experiments on the ISS such as the Miller-Urey experiment.