It has to do with something called the Schrodinger equation, which is a mathematical representation of what an electron will do in a nucleus. Basically, unless you can do fairly difficult differential equations, it's best to accept that they are.
If you can, check out the Wikipedia page for the equation. It goes into far more detail than makes sense to do here.
Atoms are much more like fluffy stuffed animals with arms and legs. And imagine that those arms and legs have strong magnets on the inside and when they touch, the atoms stick together and form molecules.
Atoms are not all spherical. Most of the elememnts have wildly distorted shapes that look like a mad glassblower's cabinet.
The gravitational force and weathering have shaped the planets.
Gravity brings matter from all directions and it naturally forms these bodies into spheres
The electron cloud around an atom occupies a space that is roughly spherical, but at any given moment the electrons do not occupy that entire space, so the shape is not truly spherical.
Gravity makes the planets spherical
That is a convenient representation.
They are all nearly spheres, but they all bulge out at the equator.
Planets and Dwarf Planets are both round, unlike asteroids, which are potato shaped.
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.
The Earth is an inner planet, and all the inner planets are rocky. The Moon is made out of the same matter as the Earth, so yes, they are both rocky spheres.
Yes, all planets are spherical. They all have a slight bulge at the equator due to rotation, but are almost perfect spheres.
All the planets are spheres.
because the gas is distributed evenly in all directions
Yes!!!! The correct term is "spherical", which means round in all dimensions like a ball. (A hoop is round, but is not spherical) Stars and planets are not perfect spheres, but they are very close to perfect spheres.
Venus is roughly spherical, as are all planets.
No all planets are almost perfect spheres
The planets turn about their axes (rotate), and move in orbits about the sun (revolve). They are all in dynamic motion all the time. Welcome to the music of the spheres. Planets (all of them) are continually in motion. They all revolve on their axes and move about the sun in their orbits. This is the music of the spheres.
They are all nearly spheres, but they all bulge out at the equator.
The inner planets have a spherical shape. In fact all planets are more or less spherical.
They are alike because they are both called planets, both terrestrial planets and gas giants are spheres, all have a somewhat dense core and lastly all orbit around the sun.
Planets and Dwarf Planets are both round, unlike asteroids, which are potato shaped.
True...
Planets can be analysed in terms of concentric spheres which include, the lithosphere (rock), the hydrosphere (water) the atmosphere (air) and so forth. The atmosphere itself is divided into several spheres, the troposphere (at the bottom) the stratosphere (at higher elevation) and the exosphere (the very thin air where the atmosphere meets outer space). Space is not divided into spheres, although planets and stars are spherical in shape.