Heaven and the Earth were a Joined Entity

Have those who disbelieved not considered that the heavens and the earth were a joined entity, and We separated them and made from water every living thing? Then will they not believe? 21-30

Reflections.

Sky and the earth were separated from a single fire ball after big bang, and every living thing was created from water, two major facts about our life which Quran has mentioned almost 1450 years ago, science has discovered only recently. Is this not the sufficient proof that Quran is from God?