Earth (and all of its 'neighbors') is a spheroid. Why is this?
Earth could've been a cube, a tetrahedron (pyramid) or really any shape! But why a sphere?
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$\begingroup$ @FlorinAndrei yes, either Why are planets spherical? as you point out, or Why does gravity make everything round? This is certainly a good question, but it's been asked before. $\endgroup$– uhohFeb 1, 2018 at 23:15
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