NASA is delaying plans to move the Mars Sample Return (MSR) program to its next phase of development after an independent review found serious issues with its technical readiness, cost and schedule.

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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...