SLS on pad
The first SLS on the pad at Launch Complex 39B for a countdown test scheduled for April 3. If that schedule holds it would delay a Crew Dragon launch to the ISS by at least a day.

A practice countdown for NASA’s Space Launch System could cause a delay in the launch of a commercial mission to the International Space Station, a move with potential ripple effects for other missions to the station.

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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...