Live coverage of the countdown and launch of a Falcon 9 rocket from Cape Canaveral with SpaceX’s 13th operational Dragon resupply flight to the International Space Station. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter. Watch on a mobile device.
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Rapid-fire engine tests raise hopes for DARPA’s planned reusable spaceplane
A series of unprecedented back-to-back test-firings of a rocket engine originally developed for NASA’s space shuttle concluded earlier this month, giving engineers data crucial to achieving rapid 24-hour turnarounds planned for a U.S. military-funded reusable winged booster under construction at Boeing, government and industry officials said.