Gravitational Force
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Stars maintain their spherical shape due to the balance between internal pressure pushing outward from nuclear fusion reactions in the core and gravity pulling inward. This equilibrium creates a stable equilibrium that keeps the star from collapsing under its own gravity and helps to maintain its rounded form.
All planets and stars are approximately spherical in shape, a shape formed under their own gravity. Most are `oblate` spheroids though, squashed spheres, since their rotation can cause them to `bulge` out at the equator if it is sufficient enough.
An s orbital is spherical in shape, with a high probability of finding the electron closer to the nucleus.
The spherical shape of the crystal caught the light beautifully.
The moon is spherical.
Stars are generally spherical due to the force of gravity pulling the matter towards the center, creating a balanced shape. However, some stars can have irregular shapes due to factors like rotation, magnetic fields, or interactions with nearby stars. Overall, most stars appear as near perfect spheres.