This is over 99% air (aerogel)

This is over 99% air (aerogel)

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Silica aerogel is one of the world's lightest solids. It's made from a very fine network of silica and over 99% of it is actually air. All of this air makes it a really good insulator. The texture of it is kind of like Styrofoam, but it's actually really fragile, and it's really easy to accidentally break it.


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