Space.com on MSNOpinion
Winning the Red Planet race: Returning Mars samples before China should be a top US priority, experts say
For astronaut safety and to bolster success of the human exploration to come later, NASA needs an end-to-end demonstration of ...
U.S. plans to return Mars samples face delays as China advances its own mission. Scientists and policymakers debate costs, timelines, and the role of sample return in future Mars exploration ...
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