Bathroomcoffee, noone can say for a fact that the Universe has not existed forever.  Scientists need to explain things rationally so they believe that the Universe has a beginning and after doing extensive research that possibly cannot be taken as fact, they have approximated that the universe has existed for 13.8 billion years 

Do you really believe scientists have any way of predicting what happned 13.8 billions years ago? Everything scientists say about creation are theories. They cannot make approximations for things million years old and we are talking about billion years. 

You can choose to believe they are absolutly correct about things like the big bang that happened billions of years ago or you can keep an open mind about it and believe that perhaps the universe is infinite :)

"Or are they the same peoples ?"

God is not a person or people. It seems like the Universe is god and we are part of the universe so we essentially are part of god, like we always believed :)