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There are many obstacles that man has to overcome in order to live on Mars, but here are the major five:

too far away: Mars is 34 million mi (55 million km) away from the Earth at its very closest approach. That requires a lot of fuel (too expensive), and such an enormous distance takes about 9 months and is very dangerous (about two-thirds of the unmanned missions to Mars have failed)

breathable oxygen: We would need tons of breathable oxygen both on the way to Mars and while living on Mars.

low air pressure: The air pressure on Mars is only 1% that on the Earth, so we would need an ecosystem with artificial air pressure.

low temperature: The Martian temperature is usually well below zero. We would need artificial temperature control in our ecosystem.

solar radiation: The Martian atmosphere is too thin to protect us against solar radiation, so we would need excellent protection against solar radiation.

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12y ago

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