Now why does this material matter? It matters because despite its low weight and density aerogel can support in compression 4000 times it weight. That's like supporting the weight of a car on your back. Since aerogel is so light and porous it makes an excelling heat and electrical conductor. The huge gaps of air inside its structure makes it difficult for heat to move through it. However like most ceramics it still very brittle. Just watch this intro video about aerogels.
|That has gotta be hot? No, not really.|
Aerogels are currently being used in areas like window insulation. NASA has a number of uses aerogel including insulation in the Mars Rover and spacesuits. NASA also used aerogels to trap space dust on the Stardust spacecraft. Space particles normally vaporize when the contact solid materials. Companies like Dunlop are even using them in tennis rackets.
If you want to know more about aerogels I found this amazing blog with all kinds of information. The blog is called "aerogel.org."