Aerogel research. Researcher holding up a container during research to create new forms of aerogels. Aerogels are among the lightest solid materials ever produced. They are made by combining a polymer with a solvent to form a gel,and then removing the liquid from the gel and replacing it with air. The result is a substance with the structure of a gel,but without the liquid,and therefore without the weight. Aerogels are extremely porous,low in density,and extremely light. They perform excellently as insulation,and applications are being developed for space exploration. Photographed in 2013 at NASA's Glenn Research Center,Ohio,USA | |
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