Aerogel

Several really amazing things to note about aerogel are its incredibly light weight, incredible strength for such small mass, and its incredible insulating powers. Aerogel often weighs only 3-10 times as much as air. Its strength and insulating powers are probably best seen to be believed.

Aerogel insulating a flower from a Bunsen burner flame

Aerogel is a fantastic insulator — if you had a shield of aerogel, you could easily defend yourself from a flamethrower. It stops cold, it stops heat.

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