MOSCOW, Feb. 25 (UPI) -- The International Space Station crew is scheduled for nearly six-hour spacewalk to attach a dummy to the Russian Zvezda module.
The dummy, named Matroshka after the layered Russian matrioshka dolls, will be attached outside the ISS Thursday and will simulate an astronaut spacewalk to measure the radiation doses that would be experienced by astronauts when outside the ISS.
While radiation levels are monitored carefully inside the ISS, radiation doses received by astronauts outside the ISS is unknown, Universetoday.com reports.
The simulated human is composed of natural bone and a material closely resembling natural tissue as well as a lower-density material to simulate the lungs. Another layer is designed to simulate skin, which is covered by a material to simulate a spacesuit.
Radiation sensors were placed by key organ locations such as the stomach, lungs, colon, eyes and skin.