ZEHST the world's first hypersonic plane unveiled, travels at 5029km/hhttp://www.heraldsun.com.au/technology/zehst-the-worlds-first-hypersonic-plane-unveiled/story-fn5izo02-1226078383182 by Paulosborne • 15 years ago 2 3 15 years agoHEheraldsun.com.au