Supersonic test aircraft aimed to reach 260 mph at altitude of 20,000 feet.

NASA fired up RS-25 engine No. 20001 at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, ...

NASA’s X-59 returned early from its second test flight after a return-to-base call as the pilot and aircraft landed safely at Edwards Air Force base in California.

Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

NASA's X-59 experimental aircraft is preparing for its second flight, a step that will set the pace for more flight testing in 2026. Over the coming months, NASA will take the quiet supersonic jet ...

NASA's experimental supersonic X-59 jet designed to travel faster than the speed of sound is preparing for its second flight from California.

SpaceX chief Elon Musk said in February that the mighty Starship rocket would embark on its 12th test flight this month, although several more recent reports have suggested that it might not leave the ...

Starship Flight 12 took another step toward launch, with Booster 19 completing an initial test campaign on the newly commissioned Pad 2 at Starbase, Texas. Culminating in a short Static Fire test, the ...