NASA rolls its enormous Space Launch System rocket back to the hangar for repairs, a move that will delay the launch of four astronauts on a long-awaited flight around the moon by at least a month. | NBC News

Before every launch, NASA unleashes an enormous wave of water in just a few seconds — but here’s the twist: it’s not to cool the engines, it’s to quiet the sound. 🚀💦 Rocket engines roar past 180 decibels, loud enough to crack concrete or even damage the spacecraft itself. To handle that, NASA created the Sound Suppression Water System, which floods the launch pad right before ignition. The water absorbs the acoustic shock, turns to steam, and softens the violent vibrations and heat. About six