Bridenstine and SLS core stage
NASA Administrator Jim Bridenstine, with the core stage of the first SLS behind him, said he expected the rocket's debut to take place some time in 2021.

NASA declared the long-delayed core stage for the first Space Launch System rocket complete Dec. 9, although the rocket’s launch is still more than a year away.

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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...