Earth is not a sphere, but an oblate spheroid due to its rotation.
the verdict
SUPPORTED
the evidence backs this
confidence 82/100
Geodetic and physical evidence demonstrates that Earth's rotation causes it to bulge at the equator and flatten at the poles, making it an oblate spheroid rather than a true sphere.
Evidence for · 4
A triaxial reference ellipsoid for the Earth
2023 · cited by 11
The paper discusses the Earth's shape in terms of a reference ellipsoid and triaxial geometry rather than a simple sphere.
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More for · 3
Gravity field due to a homogeneous oblate spheroid: Simple solution form and numerical calculations
2011 · cited by 8
The paper details the gravitational field and properties of an oblate spheroid representing the Earth.
Accounting for Earth's curvature and elevation in animal movement modeling.
2025 · cited by 0
The study explicitly refers to the macroscopic, ellipsoidal shape of the Earth when modeling spatial coordinates.
Pay attention to details, as Earth is an oblate spheroid
2020 · cited by 0
The text confirms that due to rotational and gravitational forces, the Earth is accurately described as an oblate spheroid rather than a sphere.