Stellar Metamorphosis: Earth's Water is Older than the Sun
Well yea, of course Earth's water is older than the Sun. The Earth itself is vastly more ancient than the Sun, so of course the water is going to be older. The water that the Earth has was synthesized on the Earth itself during earlier stages of its evolution from a much hotter, bigger star. Water oceans are a by-product of a star's evolution, they don't come from some place "out there".