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  "path": "/blogs/quesst/2026/06/08/x-59-blog-060826/",
  "publishedAt": "2026-06-08T23:17:04.000Z",
  "site": "https://www.nasa.gov",
  "tags": [
    "Aeronautics",
    "Armstrong Flight Research Center",
    "Low Boom Flight Demonstrator",
    "NASA Aircraft",
    "Quesst (X-59)",
    "Quesst: The Flights",
    "Supersonic Flight",
    "NASA’s X-59 Flies Supersonic for First Time",
    "NASA Science"
  ],
  "textContent": "NASA’s X-59 experimental aircraft reached a major milestone Friday, June 5, when it flew faster than the speed of sound for the first time. The 81-minute flight achieved a speed of Mach 1.1 (approximately 713 mph) at an altitude of 43,400 feet, with the X-59 performing as expected. For NASA test pilot Jim “Clue” Less, the plane’s instruments were the only indication of flying supersonic — exactly what the team wanted. “You know you are supersonic when gauges say you are supersonic. I didn’t feel anything,” Less said. “It went […]\n\nThe post NASA’s X-59 Flies Supersonic for First Time  appeared first on NASA Science.",
  "title": "NASA’s X-59 Flies Supersonic for First Time"
}