Rocket Lab is preparing a hypersonic test that could push a reusable vehicle toward Mach 20, a milestone the Pentagon hopes ...

The idea of a hypersonic aircraft capable of sustained flight above Mach 5 has circulated in defense circles for years, often under the informal label “SR-72 Darkstar.” While no official confirmation ...

A Brisbane-based hypersonics start-up is preparing to go suborbital, with a launch window later this month to test its scramjet technology over the Atlantic Ocean.