An aircraft running on hydrogen that races through the upper atmosphere at speeds exceeding twelve times the speed of sound might seem like a fantasy reserved exclusively for science fiction. That, ...

Key Points and Summary - NASA Planned a Mach 15 X-43D. It Never Flew — and That Matters Now. -NASA’s X-43A proved that an air-breathing scramjet could fly at hypersonic speeds, reaching Mach 7 and ...

Australia’s reusable hypersonic engine program could have ramifications well beyond the military sector. Australia continues breaking new ground with its hypersonic weapons program. This time, ...

CLEVELAND, Ohio — Launch of the next hypersonic flight experiment under a U.S.-Australian joint program has been scheduled for May 1, from Kauai, Hawaii, carrying a supersonic-combustion ramjet ...

Are you preparing for UPSC CSE Prelims 2026? Check your progress and revise your topics through this quiz on Science and ...