Slicing through the atmosphere at 55,000 feet, NASA’s experimental X-59 reached a vital milestone on Friday, by hitting Mach 1.4.
‘Quiet supersonic’ X-59 jet hits 924 mph in NASA test at 55,000 feet altitude
Slicing through the atmosphere at 55,000 feet, NASA’s experimental X-59 reached a vital milestone on Friday, by hitting Mach 1.4.