viper-fox: thisisbud: duckduckgrey-goose: turingtester: tlyudacris: kcjo: Aerogel, also know as frozen smoke, is the world’s lowest density solid, clocking in at 96% air. If you hold a small piece in your hand, it’s practically impossible to
tags: reblog
original: https://cool77778.tumblr.com/post/30323819590