Mars is the planet most like Earth. 3.Flying to Mars is a difficult task for humans.
There is an experiment with the name “Mars 500”in Russia. Six volunteers take part in the experiment. They come from China, Russia, France and Italy. They won't go to outer space. They will stay in small modules(太空舱)on the ground for 520 days. It's just like a real space journey(旅程).
In the modules, they will experience a lot: flying to Mars, working on Mars and flying back. During the long “journey”, the volunteers can only eat space food. They can shower every 10 days. They can call their friends or families. 4.Anyone of them can quit(退出)if he doesn't feel well.This experiment helps scientists know how well humans will be on a long journey to Mars.
Wang Yue, 26, from China, is the youngest of the volunteers. He is a teacher at the China Astronaut Research and Training Center in Beijing.
