Aerogel- World’s Lightest Solid

Aerogel is the world’s lightest solid, a gel composed of 99.8% air. Looking like frozen smoke, this material is almost as light as air and is the lowest-density solid.

“It’s so light that even soap bubbles can lift it. Despite its weight, it can withstand extreme temperatures from -273 degrees Celsius to 650 degrees Celsius and protects against heat unlike anything else on Earth.
However, even with a small pressure applied by my finger, the aerogel shatters into thousands of pieces and turns to dust.”