– basically, why is the structure the way it Is. Moreover, what significance can we attribute to this matter of fact? Thanks!
In: Earth Science
Earth (And planets and stars in general) are round because of gravity. Gravity is a force which pulls matter closer together, and the shape which allows the most matter to be nearest to the most other matter, is a sphere!
If the Earth were some other shape instead, like a flat disc, then the edge of the disc, would be much further away from the bulk of Earth’s mass than it could be. If some of the planet’s mass broke off the edge and sat against the middle instead, then it would all be much closer together.
So the end result, when gravity pushes all matter toward its neighbouring matter, is stuff sticks together in spherical blobs.
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