New Hypersonic Rocket Test Launched in Australia

New Hypersonic Rocket Test Launched in Australia
A hypersonic rocket launches skyward during a March 22, 2010 test launch from the Woomera Test Range in Australia. The fight is part of the joint U.S.-Australian HiRise project to test and develop hypersonic vehicles for future aircraft transportation. (Image credit: Australia Defense Science and Technology Organisation)

Australian and United Statesmilitary scientists test launched a new hypersonic rocket this week, the latestin a string of demonstration flights aimed at developing ultra-fast supersonicaircraft.

The test rocket streaked through the atmosphere at speeds ofgreater than Mach 5.5, which is equivalent to more than five times the speed ofsound.

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Denise Chow
NBC News science writer

Denise Chow is a former Space.com staff writer who then worked as assistant managing editor at Live Science before moving to NBC News as a science reporter, where she focuses on general science and climate change. She spent two years with Space.com, writing about rocket launches and covering NASA's final three space shuttle missions, before joining the Live Science team in 2013. A Canadian transplant, Denise has a bachelor's degree from the University of Toronto, and a master's degree in journalism from New York University. At NBC News, Denise covers general science and climate change.