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And as for the earth being spherical, well, you don't need to go to space to know that. It's been known long before even Columbus. The only thing is I don't even know where to start. Geology itself for instance, just how the Earth works and how we get so many formations. What the earth is made out of.
Don't be afraid to ask questions, it's great to ask questions. Scientists want you to ask questions so they could answer them.
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