Water Works
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September 13, 2011
An artist's concept depicts a thick "doughnut" of dust encircling a quasar, which is a smaller disk of super-hot gas encircling a supermassive black hole. Astronomers recently discovered that a disk like this one contains enough water to fill Earth's oceans 140 trillion times over. The disk encircles a quasar that is billions of light-years away. Its central black hole is billions of times more massive than the Sun, and its surrounding disk produces millions of times more energy than all of the stars in our entire Milky Way galaxy. [NASA/ESA]
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