Layers Explained | Astronomy | AI | Technology on Instagram: "At the heart of a nuclear reactor, an eerie blue glow appears — but it isn’t heat, fire, or radiation leaking out. This light is called Cherenkov radiation. It occurs when charged particles released during nuclear reactions move through water faster than light can travel in that same medium. While nothing can exceed the speed of light in a vacuum, light slows down in water. When particles outrun it, a shockwave of light is produced —