The Apollo bubble helmet is perhaps the most iconic helmet any astronaut has ever worn, why would it ever be retired? Well just as many important decisions NASA makes, it came down to crew safety.

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Sources:
https://www.amazon.com/U-Spacesuits-S...
http://www.airlockinc.com/default.html
https://www.nasa.gov/audience/foreduc...
https://www.hq.nasa.gov/alsj/ILC-Spac...
https://historycollection.jsc.nasa.go...
https://www.nasa.gov/centers/johnson/...