Kilopower
An illustration of a Kilopower nuclear reactor on the moon. NASA is considering a flight test of that fission reactor technology, possibly flown on a lunar lander, in the mid-2020s.

The White House released a new space policy directive Dec. 16 intended to serve as a strategic roadmap for the development of space nuclear power and propulsion technologies.

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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...