PREVIEW: MARS SAMPLE RETURN: Colleague Bob Zimmerman analyzes the three Mars Sample Return missions possible by decade's end and picks a possible winner. More later.

The John Batchelor Show - Podcast készítő John Batchelor - Hétfők

PREVIEW: MARS SAMPLE RETURN: Colleague Bob Zimmerman analyzes the three Mars Sample Return missions possible by decade's end and picks a possible winner. More later. 1941

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