pizzahut451 said:
And the laws of physics didnt exist before big bang. You cant use physics to prove Big Bang |
Sure you can.
We may not know the nature of, um, nature before the big bang, but we can certainly use the laws of physics to prove it happened because they existed at the point of the big bang.
For example, we can observe the way the Universe itself acts to show that a big bang occurred. I asked you once already what you explanation of the metric expansion of the Universe was, but unfortunately I never got a reply. The metric expansion of the Universe is quite an elegant observation that near enough proves the big bang theory by itself.
We can observe the doppler shift of other galaxies and when we do we find that all galaxies are moving away from each other. This can only be possible if the space they existed in themselves was expanding.
Think of it like blowing up a dotted balloon.You have a balloon with a series of dots on the surface, as you blow it up the dots aren't moving around the surface of the balloon, but they are moving away from each other due to the expansion of the balloon. The Universe is the balloon, and the dots are galaxies.
We've measured this rate of expansion and if we reverse it and extrapolate it backwards we find that the Universe had to of been a singularity (A single point) around 13.7Bn years ago.
I would just like to know how a Big Bang skeptic explains this observation.
