A tiny Japanese satellite made from wood sounds like a novelty. It isn’t. Behind the strange design is a far more unsettling story about what modern spacecraft leave behind in Earth’s atmosphere. What would make aerospace researchers send wood into orbit at a time when satellite design is becoming more advanced, more miniaturized, and more dependent on specialized materials? The answer is not nostalgia or novelty. It is the growing concern ov... [5681 chars]
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