The airgel, also called solid smoke and discovered in 1931, eventually became the world's lightest materials. Since air is composed by 96%, it is easy to see why it is extremely light.
Last year, the aerografito took first place thanks to its density of only 0.18 mg/cm3. It was very well received and acclaimed but his reign was short lived, as in these days, the graphene airgel became lighter material...
