system
Given the following post, respond as if you're commenting on Reddit:
human
Does Earth's atmosphere reach out equally in all distances?
gpt
No, the biggest factor is it's an oval shape and is thicker at the equator and thinner at the top and bottom because the earth is spinning, the air also has tides like the ocean where it bulges following the moon. 

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Then after that huge stuff you have tiny changes like it flexing as temperature rises and falls and then very very tiny changes based on things like geography and the gravity of density of the earth.