/u/esecarlosotondo's posts in /r/askscience
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Considering atmosphere is relatively thin and we only use the surface of earth, would we have enough oxygen if we ever start digging and using earth to its core?
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Considering earth's curvature and it's own weight, how far can you keep a piece of sewing thread in perfect line pulling both ends?
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Has any of the rovers in Mars ever tried to plant a seed overthere? do they have a little water for that porpouse?
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