On the path of human exploration of the universe and pursuit of ultimate quality of life, a magical material called "solid air" is quietly triggering a revolution in thermal management. Aerogel, a nano porous solid filled with more than 99% air inside, has become the ultimate weapon against extreme temperature with its extremely low thermal conductivity and ultra light mass. In the vast expanse of space, spacecraft face a dual sky of ice and fire, with temperatures exceeding 100 degrees Celsius on the sunny side and minus 100 degrees Celsius on the sunny side. It is relying on the thermal insulation jacket made of aerogel that China's Mars probe and space station can protect the normal operation of precision instruments in the alternation of extreme cold and high temperature, and even successfully resist thousands of degrees of high temperature during landing.

However, this cutting-edge technology, once exclusive to major powers, is now crossing the vast ocean of stars and entering the daily lives of ordinary people. Although traditional aerogels have excellent heat insulation, they are fragile and hard to be directly used for textile. With the breakthrough in bionics and material science, researchers have successfully imitated the microstructure of polar bear hair and developed flexible and braided aerogel fibers.

This new type of fiber can be woven into clothing like ordinary yarn, not only possessing excellent insulation performance, with a thickness only one-fifth of the same insulation level of down jackets, but also practical characteristics of breathability, washability, and easy dyeing. From spacesuits to "black technology sweaters", aerogel is redefining the way of life and survival of human beings in extreme environments with its incredible lightweight and heat insulation, and becoming a warm link between stars and fireworks.

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