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Space Documentary National Geographic Deep Space Probes This documentary and the rest of the documentaries presented relate to important times and figures in. Unmanned probes are hurling through the cosmos in record numbers. Traveling billion of miles from Earth, they are carrying out longer more complex missions t. Space Documentary National Geographic Deep Space Probes This documentary and the rest of the documentaries presented relate to important times and figures in. Space Documentary National Geographic Deep Space Probes This documentary and the rest of the documentaries presented relate to important times and figures in.