Why the world’s 1st hydrogen-powered hypersonic jet could fly at 12 times the speed of sound

This aircraft could offer some impressive capabilities.
National Security Journal on MSN

NASA’s first X-43A crashed into the Pacific in 2001 — the two that followed set hypersonic records no aircraft has beaten in 22 years

In the early 2000s, NASA was among the first to achieve sustained hypersonic flight. As part of the broader Hyper-X program, ...