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Mars rock samples may contain evidence of alien life, but can NASA get them back to Earth?
NASA will explore two different strategies for fetching Mars rocks collected by the Perseverance rover, and there's a chance ...
China’s Mars mission leaves US for space dust with Nasa at least 4 years behind
Samples collected by Perseverance rover not expected until at least 2035, four years behind Tianwen-3’s ‘grab-and-go’ timetable.