JWST UPS deploy
Two structures on either side of JWST lowered into position Dec. 28, starting a delays-long process of deploying the spacecraft's sunshield.

NASA’s James Webb Space Telescope has started the process of deploying the sunshield required to keep the spacecraft cold enough to operate, a process that is one of the riskiest aspects of the mission.

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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...