Space
Why do planets stay round?
Because gravity pulls large worlds toward their centres. When an object gets big enough, gravity squeezes bumps inward from all directions. The result is a rounded shape, though spinning can make it bulge slightly.
Space
Because gravity pulls large worlds toward their centres. When an object gets big enough, gravity squeezes bumps inward from all directions. The result is a rounded shape, though spinning can make it bulge slightly.