What happens if you take your helmet off in space?

Related questions

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3. How cold is it at the top of Mount Everest?
4. Are Sherpas Gurkhas?
5. Can bacteria survive in space?
6. Has anyone ever climbed Mount Everest?
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Tags

1. #through
2. #vacuum
3. #during
4. #always
5. #training
6. #chamber
7. #forced
8. #exposed
9. #comes
10. #occasionally
11. #something
12. #astronaut
13. #lungs
14. #helmet
15. #mouth
16. #loose
17. #accidentally
18. #survive