What does the final frontier actually smell like? NASA astronauts returning from intense spacewalks have long reported a highly unusual, clinging aroma on their suits: a sharp mix of seared steak, hot metal, and spent gunpowder. Because space is a near-vacuum, it was a mystery how an odourless void could leave such a distinct sensory footprint.In this episode, we break down how scientists finally decoded the cosmic chemistry behind this phenomenon.
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