In the early 1900s massive airships ruled the sky, offering luxury commercial travel significantly faster than the steamships that ruled the waves. But a series of disasters, including the demise of Britain’s R101 and culminating in the infamous Hindenburg disaster shattered public confidence in airships. Hydrogen proved too volatile for the public’s safety, and was replaced with helium. But the lack of lift that helium provides ended the commercial airship travel, but what if instead of helium, hydrogen was replaced with something lighter – a vacuum.

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Learn More:
   • Britain's Giant Airship: R.101  
https://www.gpo.gov/fdsys/pkg/CPRT-11... (stuff on congress - see pg 42)
https://paperspast.natlib.govt.nz/new...
https://ia802609.us.archive.org/19/it...
https://cdnc.ucr.edu/cgi-bin/cdnc?a=d...
https://www.nasa.gov/directorates/spa...