US supersonic jet soars to record 25,040 feet, fuels speedy travel dreams
Boom Supersonic’s XB-1 demonstrator aircraft set a new altitude record of 25,040 feet and matched its top speed of Mach 0.82 during its eighth flight.
https://interestingengineering.com/transportation/us-supersonic-jet-soars-to-record-25040-feet