A space-cloud of water is so big, we could split it between everyone on Earth. Each person could fill the Earth's oceans with their share!

It is thought to be the biggest (and oldest) reservoir of water EVER. Of course the water is a few billion light years away, but it’s out there. Just how big is this “lake?” Well if each person on the planet could take as much as he or she wanted, each person would be able to obtain the entire Earth’s supply of water 20,000 times. 

The “lake” is water floating around in a cloud surrounding a huge black hole- a quasar, actually. The water keeps being made, too. The black hole is creating it by knocking hydrogen and oxygen atoms together. Officially, NASA says the cloud contains 140 trillion times all the water in the world’s oceans. Also, consider this. Our own galaxy has about 400 billion stars. 

If every one of those stars has 10 planets each as wet as earth, that only knocks off 4 trillion planets’ supplies of water from the giant deep space lake. It could even supply 28 whole galaxies with water. So if we make it a few billion light years out there and discover how to circumnavigate black holes, we’ll be good on water. 

(Source)