Carbon-graphene airgel is the lightest material in the world, weighing 0.16 milligrams per cubic centimeter and capable of absorbing up to 900 times its own weight. It could be used to clean up oil spills. Aerogels have been used by NASA to protect space equipment and were first used commercially as a thickening agent for napalm bombs in the 1940s. They are extremely tough and can withstand particles traveling six times faster than a rifle bullet.
The lightest material in the world is carbon-graphene airgel, seven times lighter than air. Aerogels are a class of substances that are made by removing liquid from a gel and are approximately 99.8% air, which gives it a holographic appearance. Carbon graphene airgel is a substance produced by drying carbon gels, resulting in a substance that weighs 0.16 milligrams per cubic centimeter. The substance is capable of absorbing up to 900 times its own weight, leading scientists to promote its possible use to clean up oil spills.
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The US National Aeronautics and Space Administration (NASA) used airgel to protect space equipment for its Mars explorations because the material could withstand extreme temperatures.
One of the first commercial uses of airgel was as a thickening agent for napalm bombs in the 1940s.
Aerogels are so tough that it’s estimated that just one block of the substance can withstand particles traveling six times faster than a bullet fired from a rifle.
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