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Why a trip to Mars is not as easy ...

long time, man yearns to Mars ...

Mars. The fourth planet in our solar system, half the size of the home planet of the earth, and Martians.

moment - Martians?
Okay, there is not really, but they were one of the impulses that the world has focused its attention on the stainless planet. Meanwhile, scientists know better on the surface of Mars than in the depths of the earth's oceans. After the Mars has been trashed for years now with probes, it is planned that there land in this century, the first astronauts on the planet.
But as easily as in science fiction movies, not a Mars expedition to be. Will humanity really risk a trip to our neighboring planet, they must still Rumschlag before with some problems:

Problem 1: roundtrip

Only when Earth and Mars are together in a certain position can losreisen the spacecraft. And this setting, there is just every 2 years.

That is, if the astronauts are on Mars time, they have to bear with him until the constellation is open again between Mars and Earth.

one includes round-trip, the first astronauts will have to plan well 2.5 years

Problem 2. Psychological problems

2.5 years long would an astronaut, the earth does not look so. While the astronauts the earth to the moon, always in view, had the Mars crew would soon lose their home planet from the eyes.

before them a small star, called Mars, and behind them a small star called Earth. Nothing but emptiness.

This idea and the fact that you can not fly back again so quickly, if at an emergency breaks out, could easily trigger a mental collapse .

Problem 3: The Mars Climate

While the thermometer may rise on Mars' equator, sometimes at a comfortable 20 ° C, at night it is but all the more uncomfortable with temperature differences of up to 50 ° C .

addition, the astronauts are exposed to sunlight without protection. Even a space suit can not do much there. An astronaut who comes back after 2 years on the earth, will have a lower up to 2-3 years life expectancy. Unless he has never met during his mission on Mars by an asteroid. Meteorites may follow much more freely to the ground than on Earth because Mars has a thin atmosphere.

We can only times emphasize the thoughts from his head , in the years to the first people to live on Mars. Until better solutions are found, we will probably not as quickly colonize Mars and we can call Martians! ;-)