Blue marble home

"... the "blue marble" beauty of our home planet ... [the image] was produced by a team of scientists using months of satellite observations of the land, oceans, sea ice and clouds, covering every square kilometre of the Earth's surface. The wafer-thin atmosphere on which all life depends can just be discerned as a brilliant blue glow on the western horizon, while the vast expanse of blue ocean illustrates that the Earth is truly a water world." (The Independent)

They play marbles don't they, the gods...