NASA astronaut Scott Kelly rests in a chair outside of the Soyuz TMA-18M spacecraft just minutes after he and Russian cosmonauts Mikhail Kornienko and Sergey Volkov of Roscosmos landed in Kazakhstan on March 2.

Wednesday’s briefing begins with NASA astronaut Scott Kelly returning safely to Earth after spending 25 days shy of a year on the International Space 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...