Resilience HQ on Instagram: "Japan just turned the night sky into pure spectacle with one of the largest single fireworks ever launched 🤯✨ The explosion was so massive it illuminated the landscape like daylight for a moment. This wasn’t just about size — it was about precision engineering. The shell had to be perfectly balanced to rise safely, ignite evenly, and burst symmetrically at high altitude without collapsing under its own weight. Timing, chemistry, and aerodynamics all had to align wit