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AI | Technology | Future on Instagram: "The fastest aircraft on Earth make passenger jets look slow. ✈️⚡ At the top of the list is NASA’s X‑43, an unmanned hypersonic research vehicle that reached about Mach 9.6, followed by the legendary X‑15 at around Mach 6.7. Below them are scramjet testbeds like the X‑51 Waverider and icons like the SR‑71 Blackbird, MiG‑25, MiG‑31, F‑15 and Su‑27, all pushing beyond Mach 2–3 in service and test flights. Some experimental hypersonic projects may be even fast