Inspiration4 briefing
SpaceX's Benji Reed (left) and the Inspiration4 crew of Jared Isaacman, Hayley Arceneaux, Sian Proctor and Chris Sembroski discuss their upcoming mission at a Sept. 14 briefing.

SpaceX’s first fully commercial Crew Dragon mission is being closely watched by both NASA and other companies in the commercial human spaceflight sector, who see it as a pathfinder for future missions but not necessarily a model for them.

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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...