No scientific theory is beyond improvement or dismissal (if proven wrong). Human scientific understanding has ‘evolved’ over-time, moving toward an ever greater, or more subtle understanding of the material universe. Science deals exclusively with the material universe because it can be seen – either technologically or mathematically – and therefore can be ‘observed’ and ‘measured’. This is even true of the quantum level of existence, which humanity only knows is there, because it has been ‘observed’. An apparent problem at the quantum level, is that it is difficult to ‘measure’ the behaviour of certain sub-atomic particles (termed ‘uncertainty’). Below is an informative video that explains the state of human knowledge as it now stands – this is open to revision at anytime. The ‘Big Bang’ event appears to have happened. The universe is expanding, that is, space itself is stretching (apparently faster than light). As space stretches, the light travelling through it is also stretched. However, logically working backwards through time, it appears correct to say that the universe was ‘less stretched’, i,e. ‘smaller’ than it is today at an earlier time in its existence, and this has been confirmed with photographs taken of when the universe was just 370,000 years old – some 13.8 billion years ago. Furthermore, a definite ‘event’ occurred which saw a highly dense and hot universe suddenly emerge and rapidly expand. The sticking-point for many scientists is whether a ‘singularity’ occurred, and if it did, what was its precise nature? Hot plasma transitioned into a gas state, as hydrogen atoms were formed. Simultaneously, the infra-red light which was trapped was suddenly ‘freed’ to expand across the universe.