https://en.wikipedia.org//wiki/Aerographene https://en.wikipedia.org//wiki/Aerographene It is approximately 7.5 times less dense than air. Note that the cited d

https://en.wikipedia.org//wiki/Aerographene https://en.wikipedia.org//wiki/Aerographene It is approximately 7.5 times less dense than air. Note that the cited density does not include the weight of the air incorporated in the structure: it does not float in air.