https://lifeboat.com/blog/2025/07/this-plane-just-did-the-impossible-historic-supersonic-flight-silences-the-sky-with-zero-sonic-boom-for-first-time-ever Safeguarding Humanity Fri, 04 Jul 2025 03:12:06 +0000 hourly 1 https://wordpress.org/?v=6.8.1