The Stellar Systm

Our Earth is a comic body. It is an insignificant speck of dust In the universe. The Universe itself is a vast infinite expanse of space and matter. Mostly it is empty space or vacuum containing nothing seemingly physical. In this space matter is only sparsely dispersed in a fashion and due to causes that are as yet beyond our complete understanding. The so called concentrations of matter in space have been differentiated by the scientists into nebulae,galaxies,stars, planets,asteroids,comet and comic dust and so on. Nebulae are enormous masses of gaseous clouds without any structural differentiation. Galaxies are assemblies or associations of billions of stars in each case. all the stars in galaxy are held together by the force of gravitation. there are millions of galaxies each with billion of stars in our Universe. A single galaxy with its constituent stars make a stellar system.