At the last instant before the sun sets on a clear evening, a sharp-eyed observer might notice the bright speck of sunlight turn green. For most of the world, that "green flash" marks the end of day. But for a lover of the night sky, it marks the beginning of a Stargazer's Journey. Even William Herschel, who discovered the planet Uranus, knew that music had a lot in common with Astronomy. It's been a great tradition that continues with John Serie's beautiful collection of cosmic musical poetry.