There is something I cannot get my head around. People say the Universe started as a point of Space and Time around 13.8 billion years ago. They say that early stars formed about 500 million years later. What does not make sense to me is how we can place a time frame on this, time began with the big bang. This means it is meaningless to say "what was before the big bang" because the word "before" only has meaning in the presence of time (believed to be increasing entropy). But what about at the beginning. The speed of time relative to us (in space) is influenced by mass. If the mass of the Universe is concentrated in a small point how can we meaningfully talk about time at this point. Also did the increasing rate of entropy this early Universe obey the same rules. This is why I am confused when people talk about the age of the Universe. When talking about something on a Universe scale our concept of reality ceases to be.