Discover the story of the North American X-15's first powered flight on September 17, 1959, when Scott Crossfield piloted the ...

On Aug. 22, 1963, U.S. Air Force Captain Joe Walker flew an X-15 space plane higher than any pilot had ever flown before. Walker reached an altitude of over 67 miles (108 kilometers). That's about 5 ...

The Space Force operates the Global Positioning System satellite network to provide navigation services to ships, airplanes, ...

-Air-launched from a B-52, the X-15 reached a record-breaking speed of Mach 6.7 and flew high enough to earn astronaut wings for eight of its pilots. -While never intended as a weapon, the X-15 was a ...

Living at high altitude could protect against obesity, according to a study of more than 4 million children across Colombia. The finding fits with existing evidence that high altitudes help ward off ...

The Army helicopter that collided with a commercial plane over Washington, D.C., in January had incorrect altitude readings, which contributed to the aircraft getting too close, according to National ...

Tests raised questions about whether instruments in an Army Black Hawk helicopter may have led pilots to believe they were at a safer, lower altitude before they collided with a commercial jet in ...

(AP) - Incorrect altitude readings on the Army helicopter that collided with a passenger plane over Washington, D.C., in January contributed to the aircraft getting too close, but air traffic ...