Man’s theories are not without its problems. One of the biggest scientific problems with the big bang theory is that if it is true then it should of produced equal amounts of matter and antimatter. Matter is anything that has mass and takes up space. They are four states of matter solids, liquids, gases, plasma. The state of matter is about how the molecules and atoms are arranged. Antimatter has the same mass as matter but each particle has the opposite charge of matter. Samuel Ting a leading advocate in the search of antimatter says “ At the beginning, equal amounts of matter and antimatter were created. Now there seems to be only matter. There have been theoretical speculations about the disappearance of antimatter, but no experimental support”. In the observational universe we have plenty of matter but no or little antimatter.
Another problem with the big bang theory is called the horizon problem. The cosmic microwave background supposedly shows that the universe had a uniformed temperature before the light could of travelled there. Even assuming the time scale of 15 billion years is accurate it still isn’t enough time for light to travel from one end of the universe to the other.
Inflation theory has been developed as a rescue device to fix some of the problems with the big bang theory. However it is only a theoretical theory and has no observational support. There was a discovery of a signal called the bicep signal that was supposedly observational support for inflation. However after a more detailed analysis it was thought that the signal was stardust as a result of a supernova. See http://www.nytimes.com/2015/01/31/us/a-speck-of-interstellar-dust-rebuts-a-big-bang-theory.html?_r=0 for further information.