An ultra-quiet experimental aircraft could soon take to the skies in a bid to bring back supersonic airline travel.

NASA’s X-59 is undergoing ground tests to ensure that is is safe to fly. The aircraft uses new technologies to fly faster than Mach 1 while reducing the noise of the loud sonic boom.

“We moved the innovative aircraft to a run stall on the flight line for further ground testing, including vibration testing,” contractor Lockheed Martin wrote in an announcement. “It is aiming to quiet the sonic boom and is one step closer to shaping the future of supersonic commercial flight travel.”

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