Useless information #52 – What happens to an astronaut if he takes his helmet off in space?

Spoiler: His head wouldn’t explode!


The air in his lungs would come out very quickly provoking great damages in his lungs. Next he would start to experience anoxia. When the pressure decreases the volume increases (Boyle’s Law) but there is no pressure in vacuum, therefore the water in the body would boil, regardless of the temperature. The whole body starts to swell causing great pain. The blood also boils and gas bubbles are formed in the arteries.

I guess this is enough but in case you are wondering...

If he takes off the entire suit…
If he is exposed to the sun light he would immediately burn. If he’s not… he’d be facing hundreds of Celsius degrees below zero.

Source

RMach


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