When planes exceed Mach 1 (the speed of sound, or about 767 miles per hour—1,234 kilometers/hour for those using the metric ...

But with NASA's X-59 plane, that could change ... Over a half-century ago, the U.S. banned commercial planes from flying at supersonic speeds over the nation, but NASA's Quiet SuperSonic Technology ...

NASA says the X59 supersonic jet will produce a sonic thump instead of a sonic boom, which might help lower it's noise.

American space agency NASA announced it has concluded the ground engine tests for the X-59 supersonic airplane, first flight coming later this year ...

WASHINGTON (dpa-AFX) - NASA's X-59 quiet supersonic research aircraft took another successful ... which seeks to solve one of the major barriers to commercial supersonic flight over land by ...

NASA's Sustainable Flight Demonstrator (SFD) project recently concluded wind tunnel tests of its X-66 semi-span model in ...