Astrum. Why Earth is not a perfect sphere but slightly pear-shaped. Posted: February 14, 2025 | Last updated: March 8, 2025. More for You ...

Earth is not a perfect sphere. Yes, we've all been taught that the Earth is not flat, but it may shock you to learn that it's not perfectly spherical either.

“Even though our planet is a sphere, it is not a perfect sphere,” according to NASA. “Because of the force caused when Earth rotates, the North and South Poles are slightly flat.

Earth, in most renderings, is a smooth sphere with a glossy complexion—a blue marble, as pictures snapped from space have shown us. Earth scientists know that’s not exactly true. Earth, in ...

(Earth’s oblateness is about 0.3 percent because our planet rotates much faster than these other bodies.) That’s true for planets in general, so Venus is neither sphere nor there. Other stars ...