The fundamental constants within cosmology include measurements of the average level of gravity in the universe, the speed of light and such like. Of these fundamental constants, the Cosmological constant, which indicates the average density of energy in empty space, is peculiar because the models of the universe would suggest the level to be relatively high in order to enable matter to coalesce into stars and planets and not simply dissipate. It is less than 10^-53 which, in statistical terms is zero. This tiny value has an enormous effect on the state of the universe. According to the relativistic connection between energy and matter, energy is proportional to density. A minute variation in this constant, as may exist in alternate universes (something to which I will be returning later), would mean that humanity would not exist. If the density of the universe was higher, it would have collapsed shortly after forming and were it lower, planets and stars would never have coalesced from floating debris from the Big Bang.