Quasar Quest | Beyond Astrophysics on Instagram: "3D-printed. Detonation-driven. 251 seconds of raw thrust. This is NASA’s Rotating Detonation Rocket Engine (RDRE) in actiona 3D-printed combustor that uses ring-shaped, supersonic shock waves to squeeze more performance out of rocket fuel. At Marshall Space Flight Center (Huntsville, Alabama), engineers hot-fired the full-scale RDRE for 251 seconds, pushing >5,800 lb of thrust—long enough for lander touchdowns or deep-space burns toward the Moon