杏吧原创

I read in New 杏吧原创 that the pressure at Earth鈥檚 core is 3.6 million atmospheres. I would expect the pressure there to be zero, because it arises from gravity, and this must be zero at the core since the pull of the surrounding matter is equal in all directions. Can someone get to the bottom of this?

Shawn Charland, Ottawa, Ontario, Canada

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