NASA’s renewed effort to return humans to the moon draws inescapable parallels to Apollo a half-century ago.

A NASA official warned that extended delays in finalizing a fiscal year 2020 budget for the agency could have implications for its ability to stay on schedule for returning humans to the moon in 2024.

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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...