I have done a bit of research on that. I don’t think that current aerogels are engineered to withstand full atmospheric pressure. With that said, the approach w

I have done a bit of research on that. I don’t think that current aerogels are engineered to withstand full atmospheric pressure. With that said, the approach would make sense for a number of reasons: - Helium and hydrogen “escape from everywhere”. - Hydrogen burns - Helium is obtained from natural gas and is rather expensive. An aerogel made from biomaterials (think of a sort of bio-engineered coral) could possibly have enough strength and low density.