How you'd really die in space: What sci-fi gets right (and wrong) about extra-terrestrial expirations

You've seen it in a thousand sci-fi movies : an astronaut is ejected into space and freezes instantly, then shatters like an ice cube. A hairline crack appears in a helmet, and a character asphyxiates in seconds, desperately pawing at their spacesuit as they sink to their knees, and their skin turns blue. Maybe a sleek ship is being chased by enemy fighters through a dense asteroid field, and one of them smashes into a massive space rock and is explosively atomized. …