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Gravity.
Gravity pulls things together equally in all directions. This means that once the amount of material collected together gets big enough to it flows into a sphere. However, if the sphere is rotating then the speed of the spin want to fling material out and this means that spinning bodies are not spheres but 'oblate spheroids', they are fatter round their middles.
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Do stars orbit planets or planets orbit stars?
Planets orbit stars.
What is the difference between stars and planets and and moon?
A star is a luminous celestial body, made up of plasma having a spherical shape.A planet is either a rocky or gaseous spherical body orbiting the Sun, or a star.A moon is a natural satellite of a planet.
Why are planets moons ans stars all round?
Planets, moons, and stars are round due to gravity. Gravity pulls objects towards their center of mass, causing them to form into a spherical shape. This is the most stable and efficient configuration for large celestial bodies.
Why do you see stars twinkling but planets do not?
Stars twinkle because their light passes through Earth's atmosphere, which causes it to be refracted in different directions due to turbulence. Planets, being closer to us and appearing as larger discs of light, are less affected by this atmospheric turbulence, so they do not twinkle as much.
Do the stars or dwarf planets orbit planets?
No. Dwarf planets orbit stars just like planets do. Stars orbit the center of their galaxy. An object orbiting a planet would be a moon.
