
SpaceMore in Space→
NASA’s X-59 breaks the sound barrier for the first time
NASA’s X-59 quiet supersonic research aircraft has completed its first supersonic flight, a milestone that moves the Quesst mission closer to testing low-boom flight over communities.
Key Takeaways
- The X-59 reached about Mach 1.1 and 43,400 feet in an 81-minute flight on June 5, 2026.
- NASA says the aircraft is designed to create a quiet thump instead of a loud sonic boom.
DE
DT Editorial Team··via nasa.gov

