I don't think we KNOW that for sure, it's all speculation that cannot be proven. It could be that space and time were created somehow before the laws of nature came into being, even if it was a billionth of a second prior. How can we possibly know with any certainty what was possible, Einstein's Theory may not be totally accurate or complete.
In November of 1919, at the age of 40, Albert Einstein became an overnight celebrity, thanks to a solar eclipse. Eddington’s experiment had confirmed that light rays from distant stars were deflected by the gravity of the sun in just the amount he had predicted in his theory of gravity, general relativity.
Since then, general relativity has been reaffirmed in a myriad of other ways.
General relativity was applied to the structure and evolution of the universe as a whole. The leading cosmological theory, called the Big Bang theory, was formulated in 1922 by the Russian mathematician and meteorologist Alexander Friedmann. Friedmann began with Einstein's equations of general relativity and found a solution to those equations in which the universe began in a state of extremely high density and temperature (the so-called Big Bang) and then expanded in time, thinning out and cooling as it did so.
That the universe had a beginning is widely accepted within the scientific community. The Big Bang theory has been independently validated by Hubble and Slipher - who discovered that spiral galaxies were moving away from earth - and the discovery and confirmation of the cosmic microwave background radiation in 1964.
The solution to Einstein's equations can only take us back to a billion of a trillionth of a second before space and time were created. At that point the equations yield infinities. That's where inflation theory comes in. Inflation theory postulates what happened before that. We know from Einsteins equations and from the Hubble and Slipher that all matter in the universe occupied the space of a million billion billion times smaller than a single atom and then expanded and cooled.
We know that an infinite acting universe is not possible because of the 2nd Law of Thermodynamics. As time approaches infinity usable energy will approach zero. This is known as thermal equilibrium and is the reason for why there cannot be an infinite acting universe which is eternal into the past. We don't see that, so we know that there was a beginning. Furthermore, we know that as long as expansion occurred that if we follow any object back in time that it will reach a singularity.
So I have just listed five reasons which tell us that the universe had a beginning; Einstein's Theory of General Relativity, the red shift which observes all galaxies moving away from us, background radiation which shows the remnants of the big bang, the 2nd Law of Thermodynamics which precludes an infinte acting universe and expansion which when reversed takes us back to a singularity.
Yes we cannot know what happened before the universe reached the mature age of a billion of a trillionth of a second, but just like there are five reasons why we believe the universe had a beginning, there are five reasons why we believe that inflation theory explains the creation of time and space.
So, I guess my question to you is do you have a better explanation for any of this and do you believe that these explanations are not based on science?
