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Video

Investigating the World's Lightest Solid

Rectangle Image
Video

Investigating the World's Lightest Solid

Credit: Vertasium via YouTube

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.

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