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1. NASA is planning to take of when Earth and Mars a line so with the help of Mars' gravity it would take.
2. The trip will six months or 2 years.
3. The astronauts will need food and water to survive because you can only go so long without food and water before you die.
4. I think the risks are sense you have to travel so far and because it takes so long if you run out of food and water by the time you got back to Earth you would be dead.
5. I would want to bring lots of food and water because I don't want to run out food and water. Also exercise equipment so that I don't end up like the people in Wally!