SO it is NOT that there is nothing before the BB, it is that our time/space does not exist outside of it. It is curved i thought einstein discovered something that was transcendental quality which is light. light is absolute, everything else in this world is relative. it has already been posted before: "light does not actually exist within the physical existence although we can somehow perceive it. As you approach the speed of light one of the three dimensions (length, height, and width), the dimension in line with the direction of motion, becomes progressively less, and at the speed of light that dimension becomes zero. To determine volume we multiply height times width times length, but if any one of those three dimensions is zero then the volume is zero, and that thing therefore does not exist in the material universe. Light occupies no volume of space and therefore has no existence in the physical universe And, while everything in the physical universe has some mass greater than zero, which is a necessary characteristic for existence in the material world, light has no mass at all. As you approach the speed of light mass increases, at the speed of light mass is infinite. Regardless of how tiny the amount of mass you begin with, that mass rises to infinity at the speed of light. Since photons travel at the speed of light and do not reach infinite mass it means that they had zero mass to begin with, and a light therefore does not actually exist in the material world".