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The red colour we see in images of Mars is the result of iron rusting. Rocks and soil on the surface of Marscontained a dust composed mostly of iron and small amounts of other elements such as chlorine and sulhpur. The rocks and soil were eroded by wind and the dust was blown across the surface by ancient volcanoe

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What is the temperature in mars???

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Some challenges are trying not to eat all the food, and trying not to get injured.

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Who discovered mars??

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Why is mars red????

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What are some hashtags that you think will appear after we make it to Mars?

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how far can you jump on mars?

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Can you float on Mars? (just wondering)

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how long do you think it will take to actually live on mars

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#Idontwanttoliveinmars

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What are some of the challenges of living on Mars?

https://www.mars-one.com/mission/risks-and-challenges

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What is some cool technology that you're hoping is available in the future?

http://www.sciencefocus.com/feature/future/future-technology-22-ideas-about-change-our-world

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how long would it take to git to mars

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I wonder how going to Mars (the real planet) because you can't go outside...

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It would suck to have to wear a space suite every where out side

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What do you think would be the hardest thing about living on Mars?

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What are some ways that you give back to your community?

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what do you think would be the hardest thing if  you were in Brocks  shoes

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it must have been hard not to have any water

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The dome was small and they didn't have any room to do things in it

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i wonder why they sent 5 astronauts to the simulation if they had a small dome

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Reynaldo                                      it must be hard to live in a dome and shower

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Reynaldo                                      it must be hard to live in a dome and shower

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it must be hard to live in a small space

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I wonder why they have to put a suit on when there going outside

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I think that it was cool how they all lived in a small place together for a long period of time

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I also thought it was crazy of ow many people was in such a small little dome /capsel

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I think it was weird that they lived in a small dome for a year

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How do they carry a 50 pound space suit everywhere

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I think it's really great that there doing this to train and to see how it will be on Mars.

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I think it's weird to be living in a small room (dome) where you have to share with other people and you have to save your food and water.!

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that would be really hard to last 1 year in a small space it would be

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i wander how long it took the food to git their

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I wonder how much food they had exactly for five people for a whole year?

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I think is amazing how small everything is.

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I think that it's pretty CRAZY that you can only take a shower for 20 seconds to a minute, once a week!