美国国家宇航局研制出的一种新型气凝胶,由于密度只有每立方厘米3毫克,日前已经作为“世界上密度最低的固体”正式入选《吉尼斯世界纪录》。这种气凝胶呈半透明淡蓝色,重量极轻,因此人们也把它称为“固态烟”。新型气凝胶是由美国国家宇航局下属的“喷气推进实验室”材料科学家史蒂芬·琼斯博士研制的。它的主要成分和玻璃一样也是二氧化硅,但因为它 A new type of airgel developed by NASA has been officially selected as the “World’s Lowest Density Solid” because of its density of only 3 milligrams per cubic centimeter. This airgel is translucent light blue, light weight, so people also call it “solid smoke.” The new airgel was developed by Dr. Stephen Jones, a material scientist at Jet Propulsion Laboratory in NASA. Its main ingredient is the same silica as glass, but because of it