How do planets, solar systems, galaxies and the universe ..?

Look to the light within the centre of the Galaxy. That is the math genius that makes sure all is working in harmony around itself. I hate to say this(cos I always hated Math) but everything works by a universal language of complex Math. Galaxies develop from a vast mist of objects and elements scattered in a empty part of the universe. This mess of things soon attracts to one another and results is a collective point. Every part of this gang reacts to one another and closes in creating explosions, mixing of elements and eventually, a cloud of fine uniqueness. This fires the centre and so begins a new galaxy. As the fire burns its spits outwards into its cloud. This creates areas of change that react to the core. This goes on for a very long time. Then it all settles into what is right. Balance is found and now the new galaxy knows how to seed. Great energy is sent outwards to form central areas of tremendous heat. In spitting outwards it places heavy forms of energy that cool and form into spheres. Each will react and spit outwards a correct number of smaller forms. The source has worked out how to spread its self and create form within its cloud of being. The End :).

Planets are made of solid matter - sometimes with a heated core (like Earth) or sometimes they are gas giants like Jupiter - Jupiter can hold a thousand Earths inside it,and the Sun which is made of plasma ( super hot gas) is thousands of times bigger again. The sun is at the centre of the solar system - and all the planets orbit the star we call Sol (sun). Compared to the distances between planets there are vast tracts of open space before one meets other solar systems - but many solar systems make up galaxies which contain myriad stars like our sun - they are thought to orbit a galactic black hole at the centre....there are also vast tracts of space between any given galaxies - and all galaxies are generally getting further apart as the universe expands.

Planets are like Earth. A solar system is a collection of planets so it is larger than a planet. A galaxy contains many Solar Systems and the universe contains absolutely everything.... Unless you believe in God and then he ultimately controls everything.

Planets (earth) orbiting stars (our sun) make solar systems, lots of stars make galaxies and every galaxy/star/planet basically everything together makes up the universe.