Aerogel is a ridiculously light solid used by NASA.
What I'm wondering is if Destiny's currency, 'Glimmer,' was inspired by Aerogel.
[url=http://destiny.bungie.org/galleries/gdc2013_concept_art/lg/09.jpg]Glimmer[/url]
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Possible, I used to have some of that, it's the coolest stuff, if you put it in your hand ou can feel it's there but there is like no weight in ur hand