This is pretty cool. I thought it might interest those that write science fiction.
Q: What sort of damage does the human body suffer in the vacuum of space? How long can one survive and what will happen to the person who does survive? My scenario involves an astronaut whose faceplate blows out, but not before he depressurizes his suit sufficiently to prevent immediate death.
A: First of all the victim would not explode as was the case in the movies such as Total Recall. But some very bad things do happen internally and they happen very quickly. Whether he depressurizes somewhat beforehand or not, his survival once he reached zero pressure (vacuum) would likely be measured in seconds.
Space decompression sickness is similar to that of a scuba diver that rises too rapidly after a prolonged exposure to the pressures of the deep. In this case the diver is going from excess pressure to normal pressure. In space the victim goes from…
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