(Launch webcast begins at 10:10 a.m. EDT)
Live coverage of the United Launch Alliance Atlas 5 rocket flight carrying the MUOS 5 mobile communications satellite for the U.S. Navy. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
A full-scale BE-4 engine developed by Blue Origin, the space company founded by Amazon.com’s Jeff Bezos, is installed on a test stand in West Texas for a series of hotfire tests that United Launch Alliance will closely examine before settling on the reusable methane-fueled engine for its new-generation Vulcan rocket.
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