SLS Green Run
The core stage of the Space Launch System fires its four main engines during an abbreviated test Jan. 16 at the Stennis Space Center in Mississippi.

NASA performed a hotfire test of the core stage of the Space Launch System Jan. 16, but the stage’s four main engines shut down a little more than a minute into a test designed to last eight minutes.

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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...