scientists didnt hav the technology but im a athiest so i dont believe the bible 2 be true anyway i think it is made up but i believe the bible is stories passed by mouth or 2 be the word of god

No one has "discovered" the beginning of the universe. Scientists have hypothesized what "a beginning" might have been like ... but any thinking person would ask, "What was happening in time just before that?" Genesis is simply the Hebrew / Christian "creation myth". Every religion has one.

Almost everything we know has a beginning and an end. The concept of something existing eternally is pretty weird, and takes a lot of thought getting your head around. The writers of all folk histories work from the basic stereotype that things have a start, and a cause. So they drew a picture of how the start might well have happened, and a cause, which they called God. These are the natural patterns which come to a story-telling species. Nearly all cultures have a creation myth, and they all resemble Genesis in a very general way: some archetypal creator made something, from which other things were generated, usually by division("divided the light from the darkness", "land from the seas"), to create the world we see today. The model of modern physics is strikingly similar. A Big Bang, followed by several layers of separation (raw energy to quarks to hadrons, splitting of photons from electrons, condensation of matter, condensation of galaxies, condensation of solar systems etc.) The differences are twofold. Firstly, physics has a heck of a lot of evidence for the various stages. Secondly, it maintains a steadfast "I dunno" about what happened before the Big Bang, rather than the faith-based version of "I dunno, therefore God".

He was a Science fiction writer.

They didn't "know", they "theorized" - Just like the writers of nearly every other religion. From Christians to Hindus, Jews, Zoroastrians, Greek pagans, Egyptian pagans, Norse, Aztecs, Indigenous Americans...they ALL have distinct creation mythologies, and many also have distinct end-of-times mythologies. You can't really say one specific group "knows", without saying that all of them do.

He did not. For Babylonian myths predated the writers of Genesis by a good 500 years.

Divine inspiration.

Because it is the inspired Word of God. He let the writer of Genesis know, or the story was passed on from Adam to the writer. Science has shown many things in the past 15 or 20 years that show the Bible to be scientifically correct. The louder the protests against such things as intelligent design and the age of the Earth, the more desperate the other side sounds. Anyway, anyone reading this will know the Truth 100 years from now.

You realize, don't you, that Genesis did not have a single writer? And that the writers of Genesis were of at least two different "factions?" And that all religions have a beginning-of-the-universe-story?

ha ha. yes. what did they know. someone please enlighten me. i'd like to hear this. how drunk men got over their beliefs in the genesis... maybe they decided to give up and didn't tell anyone and kept it secret.

If you believe the Bible, it's because God told him.

OK, you tell me. Let me know in convincing terms that do not depend on belief, faith, heresay, rumor, second hand information or superstition.

Before science had plausible explanations for how the known world came to be, people completely relied on religion to explain things and to provide a worldview. This applied to the concept of creation, which is nearly universal in various faiths in addition to the biblical account; as well as to the rhythms of nature, peoples' place in their surroundings, and matters of life and death.