NASA’s plans to buy future launches of the Space Launch System as a service are unlikely to achieve hoped-for cost savings, the agency’s inspector general concluded, recommending NASA keep its options open for alternative launch vehicles.

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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...