Why NASA Spews Out Half A Million Gallons Of Water During Rocket Launches

This is almost half a million gallons of water being blasted a hundred feet into the air.
The most impressive part? It was all done in just 60 seconds.

NASA created the massive fountain as part of a test for its Space Launch System, scheduled to launch for the first time in 2020.

It will be the largest, most powerful rocket NASA has ever built. Standing upright, the SLS will reach 322 feet in height, 17 feet taller than the Statue of Liberty, and weigh almost 6 million pounds.

Its first planned mission? A 25-day trip around the moon.

Tech Insider