Around a black hole 12 billion light years away, there's an almost unimaginable vapor cloud of water--enough to supply an entire planet's worth of water for every person on earth, 20,000 times over.
[Artist rendering of water vapor circling quasar: NASA]
Scientists have found the biggest and oldest reservoir of water ever--so large and so old, it’s almost impossible to describe. The water is out in space, a place we used to think of as desolate and desert dry, but it's turning out to be pretty lush.