"Hypersonic" refers to speeds over Mach 5, or five times the speed of sound. That's approximately 3,800 miles per hour, a pace that could take you all the way around the equator in less time than it ...

REDSTONE ARSENAL, Ala. – The U.S. Army Space and Missile Defense Command Technical Center’s Aerophysics Research Facility, or ARF, fired a successful hypersonic shot Dec. 11 to test its new rainfield ...

SIMI VALLEY, California—Kratos is looking at ways to operationalize its hypersonic systems developed for testing, as the U.S. government continues to seek methods to field less costly versions of the ...

An important part of data collection for the United States space program, the North American X-15 had astonishing performance utilizing the technology of the 1950s and 60s. The North American X-15 was ...