The best thing on earth

It is the best thing every human have and makes use of. It helps you with working, studying, or whatever you are doing. It is bright, it is yellow, it can be white. But it is always here, if you want it to be or not. It gives you vitamins, it lets things grow, it gives colour. It give power, electricity, it gives warmth. It gives light, it shines. It makes me possible to tan. It is beautiful to see it getting down, it is the biggest star in the universe and after all it will burn earth. You know what I mean.