Soyuz launch
A Soyuz rocket carrying the Soyuz MS-11 spacecraft lifts off from the Baikonur Cosmodrome Dec. 3.

NASA is considering buying two additional seats on Soyuz spacecraft to ensure a continued American presence on the International Space Station amid worries about additional delays in commercial crew flights.

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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...