Physiological Effects of Human Exposure to Vacuum #space #cosmicexploration

These sources collectively examine **ebullism** and the physiological trauma caused by vacuum exposure, refuting common science fiction myths about exploding or instantly freezing. **Ebullism** occurs when low environmental pressure causes bodily fluids to vaporize, leading to tissue swelling and potential circulatory failure. Humans typically lose consciousness within **15 seconds** due to oxygen deprivation, while holding one's breath during decompression risks fatal lung rupture. Survivors of brief exposure, such as **Jim LeBlanc**, illustrate that immediate recompression can prevent permanent injury. However, historical tragedies like the **Soyuz 11** mission demonstrate that prolonged exposure results in fatal hemorrhaging and oxygen starvation. Beyond pressure issues, astronauts face threats from **extreme radiation** and severe temperature fluctuations without the protection of a pressurized suit.
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