-The red planet is an arid and cold planet, but the presence of liquid water in some areas can be signs of a life planet. The arrival of an astronaut to Mars would be terrifying, because is about 79 million kilimeters from Earth and the temperatures reach 140 to 30 centigrade degrees. Some scientifics believe that Mars could be covered by liquid water in surface. There is water accomulated in polar areas and in undergrounds. This is very important, because if there is liquid water there is also life. Scientifics are waiting impatiently to make investigations in the underground and if the surface of the red planet. Others wait for a manned mision to the planet, and there astronauts could do more complex and eficient investigations than a robot, looking for Marcian life. In 2018, the NASA will launch the mision EXO Mars, and scientifics will prove their ideas.
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