For some it is hard to believe that the world has not always been the way it is now.
There are many different theories on how the world came to be the way it is now. One of those theories is the Modern Scientific theory.
The Modern Scientific theory states that everything in the universe started with the big bang.
This big bang caused an incredible amount of energy, which then went on to form positive protons and negative electrons which gathered together as lighter elements such as Hydrogen.
As the amount of empty space rapidly increased between these spots of Hydrogen, so did the amount of space between each of these 'hotspots.'
As these spots containing Hydrogen cooled down the atoms within them would move around, causing atomic fusion. This, of course, created more heat, energy and caused heavier elements all the way up to Iron (Fe).