SLS launch
NASA now expects the first Space Launch System flight, Exploration Mission 1, to slip to some time in 2019 regardless of whether or not it carries a crew.

NASA now expects the first launch of the Space Launch System to slip to 2019, regardless of any decision to put a crew on that mission, given ongoing issues with development of the launch vehicle and the Orion spacecraft.

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Jeff Foust has more than a decade of experience writing about space policy, entrepreneurial ventures and regulatory affairs. In 2001, he established spacetoday.net to aggregate and summarize the day's space-related news stories. In 2003, he started The...