World’s Lightest Solid!

AEROGEL – what is it, why is it and how does it exist? amazing stuff!
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Published on May 31, 2019

Aerogels are the world’s lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission. The focus of this video is silica aerogels, though graphene aerogels are now technically the lightest.

https://www.youtube.com/watch?v=AeJ9q45PfD0

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