The U.S.-made Blue Ghost spacecraft has landed on the moon as its private developer, Firefly, says it is targeting Mars next.

Sierra Space and Radian are developing spaceplanes that fly at hypersonic speeds, but are able to head into Low Earth Orbit ...

NASA just wrapped engine performance tests on its X-59 research aircraft, which the space agency hopes will prove a means of mitigating supersonic aircraft’s odious sonic booms. NASA and ...

Boom Supersonic's XB-1 jet went out in style on Monday (Feb. 10). The XB-1 broke the sound barrier three times during its 13th and final test flight, which lifted off Monday from the Mojave Air ...