The spring-seat he built oscillated - would it stop their bone loss in time?
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The spring-seat he built oscillated - would it stop their bone loss in time?
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The spring-seat he built oscillated - would it stop their bone loss in time?
In this episode, we follow William Edgar Thornton’s sixteen-year path from physicist and engineer to physician and astronaut as he designs and tests instruments to measure and counteract bone and muscle loss in space. We look at the devices he built, the ground tests he volunteered for, and the stakes of launching those tools aboard Challenger at night - but did they work when it mattered?
Person: William Edgar Thornton
Date: August 30, 1983
Location: Kennedy Space Center / Challenger
Event: Night launch carrying self-built medical instruments
Test: SMEAT 56-day Skylab simulation
- He combined degrees and careers in physics, electronics engineering, and medicine to tackle human physiology in space.
- He solved the measurement problem by designing a spring-seat that determines mass from oscillation period rather than weight.
- He volunteered as a subject in SMEAT, a 56-day sealed Skylab simulation, using the instruments he helped create.
- He built exercise and countermeasure approaches alongside measurement tools to address rapid muscle and bone loss in microgravity.
- He launched his instruments and himself into orbit aboard Challenger’s first night launch to test sixteen years of engineering in flight.
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