Green Run engines
NASA said the Green Run static-fire test Jan. 16 was terminated when the hydraulic system for one of four engines hit a limit intended to be conservative in order to protect the core stage.

A static-fire test of the Space Launch System core stage ended early Jan. 16 when a hydraulic system for one its four engines hit an “intentionally conservative” limit during the test.

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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...