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NASA says the X-59 returned to flight after a cockpit warning that cut short its second sortie proved to be a false positive.

Boeing's biggest role in Project Artemis could soon be obsolete.

The X-59 is designed to travel faster than the speed of sound without creating a loud sonic boom. The ultimate goal is to prove that quiet supersonic flight is a viable option for commercial airlines. Future tests will involve flying over U.S. cities to ...

For more than five decades, a federal ban has blocked supersonic flight over the continental United States, largely because the explosive crack of a sonic boom is too disruptive for communities below.

The NASA X-15 rocket plane reached speeds of Mach 6.7 and altitudes of 300,000 feet, flying to the edge of space and back. This groundbreaking program helped define the boundary between aviation and spaceflight.

NASA's Imaging X-ray Polarimetry Explorer reveals the expansion and shock patterns within RCW 86, a supernova observed by early astronomers in A.D. 185.