After five days and six nights without sunlight, six astronauts return to Earth’s surface. Read more about ESA’s astronaut training course: http://www.esa.int/Our_Activities/Human_Spaceflight/Caves/Return_to_light_for_underground_astronauts
After five days and six nights without sunlight, six astronauts return to Earth’s surface. Read more about ESA’s astronaut training course: http://www.esa.int/Our_Activities/Human_Spaceflight/Caves/Return_to_light_for_underground_astronauts
