NASA has released the landing Mars program

Xinhua net in Washington on October 9 (Reporter Lin Xiaochun) NASA recently announced the landing of Mars "three-step" plan. Astronauts must not only landed on the red planet, but also life there, eventually in the earth's outer established sustainable human foothold. However, the agency did not specify the timetable for achieving those goals and objectives. NASA to Mars is divided into 3 stages. The first phase is called "earth dependence", the main...