WASHINGTON — Space Exploration Technologies (SpaceX) plans to carry more fuel on the next launch of its Falcon 9 rocket to avoid a repeat of the oxygen-rich engine shutdown that marred an otherwise successful demonstration flight last December.

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Dan Leone is the NASA reporter for SpaceNews, where he also covers other civilian-run U.S. government space programs and a growing number of entrepreneurial space companies. He joined SpaceNews in 2011.Dan earned a bachelor's degree in public communications...