I was excited when I saw this story. I thought that perhaps we might get a decent Creation story, but nope. Just the same old, same old, God of the Gaps stuff. Theistic evolution on a comsmological scale. I'd have expected that a modern day astronomer would not be a believer in the sky fairy. Hence, on a plot scale this rates as highly derivative. On a style scale, it's nicely written with no typos and a light sense of humour.
(review of free book)