Campos features Helga and Zohar, two mannequin torsos from the German Space Agency (known by its German acronym DLR). Each of the DLR pairs is equipped with 5,600 sensors to measure radiation, and Zohar will wear an AstroRad radiation protection vest. The three simulated astronauts will show how much danger to astronauts comes from moving outside the Van Allen radiation belts that protect low Earth orbits from radiation. Astronauts are more vulnerable to cosmic rays from deep space when they reach high Earth orbit and beyond, but the risk is still being quantified.