Bible genises

When I read genises in the bible , I't all comes across to me as science from the creation of the planet, man and other life forms. Not very much seems very religious or spiritual, not that I is not of course, depending on ones definition of these words or concepts. So what do you think, who is this "being" walking around in the garden of eden, what was his form, if physical what does this imply if not ? Why create man and in what sence is man like this being ? why does genises refer to only the earth , moon , sun and stars , what about the rest of the univers. What realy transpired at babalon and woho wher the nephilem ? Could heaven actualy refer to space and if so what are the implications ?