An A-12 achieved a sustained altitude of 90,000 feet fifty years ago. A Russian MiG-25 reached over 118,000 feet forty-eight years ago. [0]
[0] http://www.wvi.com/~sr71webmaster/mig25.html
An A-12 achieved a sustained altitude of 90,000 feet fifty years ago. A Russian MiG-25 reached over 118,000 feet forty-eight years ago. [0]
[0] http://www.wvi.com/~sr71webmaster/mig25.html