Stars? Sounds cool...
stars are very complex and interesting objects in space (also called the sun). They are the reason we can survive every day and why we are here (along with many other reasons) along with everything else on earth. The light it produces every second from its extreme heat allows everything to grow and live as it does everyday. So if it does all this, how did it get there?
Stars are form because of interstellar mediums and coming together and becoming so great in mass and size, that it creates its own gravity and gas pressure. Now that's the easy explanation but we are about to go into more detail and the full life of a star.
Hydrogen gases and dust molecules in clouds with gravitational pulls cause the gases and dust clouds to start forming into the first stage of a star.
This is the stage when the star burns hydrogen and helium as a fuel because it is the most common stuff in the star (mostly) at the time.
This is when the star is at its biggest size and burns the brightest. It is also the "real" beginning to its end. The star starts burning up carbon and helium because it has run out of hydrogen.
The end has begun
The Dwarf stage is when it runs out of fuel to burn.The star could run out of fuel to burn or collapse on itself and explode (supernova). The size of the star and how much fuel it can burn. Black holes are when the star gets sucked into a black hole and is GONE.