Why are planets round?

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Planets are basically round because gravity pulls uniformly in all spatial directions, in other words, a round shape tends to result from a spinning object with a large gravitational pull.

But did you know that this pull from gravity can be strong enough to create a bulge at a planets equator hindering the lovely round shape?

It s true; but scientists tell us roundness boils down to mass, size and rotational speed. So clearly, size matters.