Why is it so important that an astronaut wears a pressurized space suit while outside of the spacecraft

cause is actually a miniature spaceship shaped like a human body that protects the astronaut

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Explanation:

Astronauts have to wear spacesuits any time they leave a spacecraft and are exposed to the environment of space. In space, there is no air to breath and no air pressure. Space is very cold and is flooding with dangerous radiation. An astronaut would quickly die in space without the protection of it.

is this supposed to be a question