In the name of science or sentimentality, astronauts have been sending various artifacts into orbit since the early days of the space race. Sputnik 2 had Laika, the first dog in space; Apollo 11 carried fabric from the Wright brothers' plane; Apollo 15 held a piece of Captain James Cook's Endeavor ship. And, in 1971, Apollo 14 journeyed to the moon with hundreds of seeds.
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