Why are all the planets and moons round?
How and why are planets spherical? What makes them round?
Why do extraterrestrial bodies always appear as a spherical shape? Why not square or cylindrical? Why are clouds round and curved in shape? Why can't they be squares or triangles? Do spheres actually have 8 sides? Why is the earth's orbit around the sun almost circular? What is the shape of the universe, conical or spherical? Why are wormholes spherical? Why do flies fly in circles? Why is the shape of the known universe not sphere? What is the principle behind why celestial objects like planets do not collapse into the gravity of the sun but revolve around it? Why are most planet orbits in our solar system on relatively the same 2D plane? Why does a human heart turn spherical in space? How many spherical moons, dwarf planets and terrestrial planets are there in the Solar System? How many sides does a sphere have? Why are flying saucers round shaped? Why does a drop of water form a spherical shape on a flat surface? Why is the universe not a sphere? What are the dwarf planets in the solar system? What's the point of existence of other planets? How round is the world? How many sides does a sphere have normally? Why are Newton's rings circular in shape? Why not square or any other shape? Do all planets have to orbit a star? Why are snowflakes symmetrical? How is the gravity of other planets measured? What is a planet? What keeps all the 8 planets in a planer orbit? How come the planets not loose their plane? What are natural satellites of a planet? What is the shape of a wormhole? Is it necessarily spherical? How does a celestial object bend space? Why does a small drop of mercury take a spherical shape, whereas bigger drops are flat?