i love astronomical books and those subjects. im pretty fascinated about the universe, its immensity and its mystery. we are in fact almost, or completly nothing(beleiving the fact that the universe is infinite or not). in the case universe would be infinite, we would be nothing. nobody except us can prove our existence, and if theres another planet with androides in a 4th dimension but we dont know this, technically it doesnt exist(...)

anyway, i beleive universe is in constant expansion, (i guess thats what u said, didnt read all, too lazy ), and so matter transforms into energy when it disapear, considering the fact nothing can disapear, it only change from one state to another, and nothing can appear by itself. that means universe maybe never started, but it is in a continuous expansion. i didnt catched all the book, kinda pretty complicated(deep astrophysics), but thats the main part.

anyway im really passionated about life, universe, etc... if u guys wanna comment, or only say your own toughts, well go ahead!