The "Extreme Environments and Impact Lab" at Seoul National Univ. is a research group dedicated to studying the behavior of materials and structures under extreme conditions. These conditions may include space environments, or low to hyper-velocity impact, among others. The lab conducts research on a wide range of topics related to extreme environments and impact, including the development of new materials and structural designs that are resistant to extreme conditions, the modeling and simulation of extreme events, and the testing and characterization of materials and structures under extreme conditions. The research conducted in the lab has the potential to enable the development of new technologies and systems that can operate effectively in extreme environments, and to improve the safety and reliability of existing technologies and systems.