National Security Journal on MSN
At Mach 6.7 and 4,520 mph, the X-15 set the crewed aircraft speed record in 1967 — 59 years later, no one has flown faster
On October 3, 1967, U.S. Air Force pilot William “Pete” Knight flew the X-15A-2 to 4,520 miles per hour — Mach 6.7 — setting ...
A Falcon 9 upper stage has been stuck in a highly elliptical Earth orbit for over a year—and now it's on a collision course with the Moon. Reading time 3 minutes When SpaceX’s Falcon 9 launched a pair ...
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