Comment on Rocket plane blasts through sound barrier on route to hypersonic flight 

Dawn Aerospace has flown its rocket-powered aircraft past the speed of sound, the latest milestone on its path to its first commercial flights. During the test, which took place on New Zealand’s South Island, the startup’s Mk-II Aurora aircraft reached Mach 1.1 and an altitude of 25 kilometres. Dawn said this marks the first time a civil aircraft has flown supersonic since Concorde.  The feat comes after Aurora hit Mach 0.92 in August, which, at the time, was three times the speed and five times the height of its previous test conducted in 2023.