3. A Gigantic Water Cloud
Imagine a cloud of water vapor so vast it holds 140 trillion times the water found in all of Earth’s oceans. Astronomers discovered this enormous water reservoir encircling quasar APM 08279+5255, located an astonishing 12 billion light-years away. This finding proved that water existed in the universe’s earliest epochs and highlighted the intense, exotic environments near quasars. Source: NASA JPL